TelcoData.US: Search for Area Codes / Exchanges by LATA

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npa-nxx	State	Company	FRN	RMDOCN	Rate Center	CLLI	Assign Date	Misc
203-200	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NWHNCT031MD	08/14/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT031MD))
203-200 is split into 1,000-number blocks - detail below
203-200-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NWHNCT031MD	08/18/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT031MD))
203-200-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	05/20/2009	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-200-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	05/20/2009	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-200-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	05/20/2009	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-200-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	05/20/2009	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-200-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	05/20/2009	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-200-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	05/20/2009	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-200-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NWHNCT031MD	07/01/2009	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT031MD))
203-200-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/11/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-200-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/11/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-201	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	NEW HAVEN	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-202	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	DARIEN	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-202 is split into 1,000-number blocks - detail below
203-202-0XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	DARIEN	NOCLLIKNOWN	02/02/2024	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-202-1XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	DARIEN	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-202-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	DARIEN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-202-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DARIEN	NOCLLIKNOWN	11/22/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-202-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	07/02/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-202-5XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	DARIEN	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-202-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	DARIEN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-202-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	DARIEN	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-202-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	06/25/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-202-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	DARIEN	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	GUILFORD	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-204 is split into 1,000-number blocks - detail below
203-204-0XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	GUILFORD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-204-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GUILFORD	NOCLLIKNOWN	08/03/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GUILFORD	NOCLLIKNOWN	08/03/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-4XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GUILFORD	NOCLLIKNOWN	05/07/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-7XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	04/19/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-204-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-205	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205 is split into 1,000-number blocks - detail below
203-205-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-205-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	01/11/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-206	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-207	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207 is split into 1,000-number blocks - detail below
203-207-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	09/26/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-207-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DANBURY	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-207-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-207-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-208	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	BRANFORD	HRFRCTCR3MD	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-208 is split into 1,000-number blocks - detail below
203-208-0XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	BRANFORD	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-208-1XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	BRANFORD	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-208-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	BRANFORD	HRFRCTCR3MD	09/23/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-208-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRANFORD	NOCLLIKNOWN	09/30/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-208-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	BRANFORD	HRFRCTCR3MD	09/30/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-208-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NWHNCT02GT0	06/20/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-208-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-208-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	05/29/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-208-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-208-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-209	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-210	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-210 is split into 1,000-number blocks - detail below
203-210-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-210-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-210-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-210-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-210-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-210-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WILTON	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-210-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-210-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WILTON	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-210-8XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WILTON	NOCLLIKNOWN	05/23/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-210-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-212	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	10/23/2008	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-212 is split into 1,000-number blocks - detail below
203-212-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	10/13/2010	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-212-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	10/13/2010	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-212-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	06/02/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-212-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	06/23/2010	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-212-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	10/13/2010	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-212-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	02/25/2011	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-212-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	02/28/2011	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-212-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	10/02/2009	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-212-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-212-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-213	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-214	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-215	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216 is split into 1,000-number blocks - detail below
203-216-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-216-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	09/26/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-217	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-218	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-219	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-220	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	TRUMBULL	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-220 is split into 1,000-number blocks - detail below
203-220-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	TRUMBULL	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-220-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	01/14/2022	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-220-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	NOCLLIKNOWN	10/05/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-220-3XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	TRUMBULL	NOCLLIKNOWN	12/14/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-220-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	TRUMBULL	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-220-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	TRUMBULL	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-220-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	NOCLLIKNOWN	05/12/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-220-7XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	TRUMBULL	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-220-8XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	TRUMBULL	WLMNCT132MD	12/21/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WLMNCT132MD))
203-220-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	TRUMBULL	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-221	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-222	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-223	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223 is split into 1,000-number blocks - detail below
203-223-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-223-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-224	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224 is split into 1,000-number blocks - detail below
203-224-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	07/19/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-224-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-224-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	12/13/2006	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-224-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	12/13/2006	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-225	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-226	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-227	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-228	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	10/04/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-228 is split into 1,000-number blocks - detail below
203-228-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	11/03/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-228-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	11/03/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-228-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	01/22/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-228-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	01/28/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-228-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	05/02/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-228-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WATERBURY	NOCLLIKNOWN	06/30/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-228-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	01/27/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-228-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	06/27/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-228-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	07/10/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-228-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	12/05/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-229	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT03DS0 🔧 Explore Switch(CLLI: NRWLCT03DS0))
203-230	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-231	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-232	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-233	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-234	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NHVNCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: North Haven Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: NHVNCT00RS0 🔧 Explore Switch(CLLI: NHVNCT00RS0))
203-235	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-236	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-237	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-238	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-239	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NHVNCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: North Haven Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: NHVNCT00RS0 🔧 Explore Switch(CLLI: NHVNCT00RS0))
203-240	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-241	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-242	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	HUNTINGTON	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-242 is split into 1,000-number blocks - detail below
203-242-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	NOCLLIKNOWN	05/14/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-242-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	HUNTINGTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-242-2XXX	CT	HD CARRIER LLC	0026630681	RMD0013231	321J	HUNTINGTON	HRFRCT0300Z	07/16/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0300Z))
203-242-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	HUNTINGTON	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-242-4XXX	CT	TON80 COMMUNICATIONS, LLC	0025462672	RMD0005819	516J	HUNTINGTON	NOCLLIKNOWN	03/02/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-242-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	NOCLLIKNOWN	06/15/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-242-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	HUNTINGTON	NOCLLIKNOWN	05/26/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-242-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	HUNTINGTON	NOCLLIKNOWN	08/29/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-242-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	HUNTINGTON	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-242-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	HUNTINGTON	NOCLLIKNOWN	02/07/2025	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-243	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-244	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	RIDGEFIELD	NRWLCT02SMD	03/28/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-244 is split into 1,000-number blocks - detail below
203-244-0XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	RIDGEFIELD	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-244-1XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	RIDGEFIELD	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-244-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	RIDGEFIELD	NOCLLIKNOWN	02/15/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-244-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	RIDGEFIELD	NRWLCT02SMD	04/02/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-244-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	RIDGEFIELD	NOCLLIKNOWN	05/18/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-244-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	RIDGEFIELD	NOCLLIKNOWN	11/22/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-244-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	RIDGEFIELD	HRFRCTASDS0	02/15/2006	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-244-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	RIDGEFIELD	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-244-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	RIDGEFIELD	NOCLLIKNOWN	09/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-244-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	RIDGEFIELD	NOCLLIKNOWN	09/28/2021	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-245	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	00/00/0000	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-246	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246 is split into 1,000-number blocks - detail below
203-246-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-246-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-247	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-248	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-249	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-250	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-251	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-252	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-252 is split into 1,000-number blocks - detail below
203-252-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	12/13/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-252-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	09/22/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-252-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	10/31/2003	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-252-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	05/23/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-252-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	03/04/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-252-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	05/23/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-252-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	07/27/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-252-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	12/08/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-252-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	01/13/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-252-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	01/18/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-253	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-254	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	FAIRFIELD	FRFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Fairfield Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: FRFDCT00DS0 🔧 Explore Switch(CLLI: FRFDCT00DS0))
203-255	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	FAIRFIELD	FRFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Fairfield Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: FRFDCT00DS0 🔧 Explore Switch(CLLI: FRFDCT00DS0))
203-256	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	FAIRFIELD	FRFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Fairfield Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: FRFDCT00DS0 🔧 Explore Switch(CLLI: FRFDCT00DS0))
203-257	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-258	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-259	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	FAIRFIELD	FRFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Fairfield Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: FRFDCT00DS0 🔧 Explore Switch(CLLI: FRFDCT00DS0))
203-260	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-261	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-262	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262 is split into 1,000-number blocks - detail below
203-262-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WOODBURY	NOCLLIKNOWN	10/30/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-262-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-262-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263 is split into 1,000-number blocks - detail below
203-263-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-263-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-263-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-264	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-265	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-266	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-266 is split into 1,000-number blocks - detail below
203-266-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-266-1XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WOODBURY	NOCLLIKNOWN	04/27/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-266-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WOODBURY	NOCLLIKNOWN	07/10/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-266-3XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	WOODBURY	NOCLLIKNOWN	02/28/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-266-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-266-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-266-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-266-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-266-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-266-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267 is split into 1,000-number blocks - detail below
203-267-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	03/27/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-267-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-267-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WOODBURY	SMFRCTATXMD	04/15/2008	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-267-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	09/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-268	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-269	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-270	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-271	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-272	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-273	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/22/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273 is split into 1,000-number blocks - detail below
203-273-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/04/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/04/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/05/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	01/03/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	02/04/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	06/05/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	04/14/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	04/14/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	07/11/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-273-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	09/09/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-274	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-274 is split into 1,000-number blocks - detail below
203-274-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-274-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	12/13/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-274-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	01/18/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-274-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	12/14/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-274-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	09/22/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-274-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	06/19/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-274-6XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	02/09/2004	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-274-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	07/13/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-274-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	NOCLLIKNOWN	02/06/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-274-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	11/12/2007	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-275	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-275 is split into 1,000-number blocks - detail below
203-275-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	NOCLLIKNOWN	02/07/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-275-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	01/30/2008	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-275-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	01/30/2008	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-275-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	01/30/2008	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-275-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	02/01/2008	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-275-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	02/08/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-275-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	02/08/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-275-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/25/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-275-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/13/2008	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-275-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-276	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	03/28/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276 is split into 1,000-number blocks - detail below
203-276-0XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	04/02/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-276-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	04/02/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-276-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	04/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	04/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	04/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	04/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	04/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276-7XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	04/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	04/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-276-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	04/02/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-277	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/16/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277 is split into 1,000-number blocks - detail below
203-277-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-277-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-278	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	05/01/2001	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-278 is split into 1,000-number blocks - detail below
203-278-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-278-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-278-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-278-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-278-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-278-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	ANSONIDRBY	HRFRCTASDS0	05/29/2003	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-278-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-278-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	09/26/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-278-8XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	ANSONIDRBY	NOCLLIKNOWN	03/09/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-278-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-279	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	BRIDGEPORT	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-280	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	03/24/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-280 is split into 1,000-number blocks - detail below
203-280-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	07/07/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-280-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	06/30/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-280-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	06/25/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-280-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	07/07/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-280-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	03/26/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-280-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	03/26/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-280-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	03/26/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-280-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	03/26/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-280-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	03/26/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-281	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-282	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	STAMFORD	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-283	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	MILFORD	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-283 is split into 1,000-number blocks - detail below
203-283-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	MILFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-283-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-283-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	MILFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-283-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	MILFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-283-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-283-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-283-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MILFORD	NOCLLIKNOWN	06/04/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-283-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-283-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MILFORD	HRFRCTASDS0	05/29/2003	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-283-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	MILFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-284	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-285	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-285 is split into 1,000-number blocks - detail below
203-285-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	01/08/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-285-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-285-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-285-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	08/22/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-285-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	09/10/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-285-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	09/10/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-285-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	04/01/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-285-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	12/28/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-285-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	04/01/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-285-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/17/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-286	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-286 is split into 1,000-number blocks - detail below
203-286-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-286-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	09/16/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-286-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	09/16/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-286-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-286-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	NOCLLIKNOWN	01/23/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-286-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	NOCLLIKNOWN	12/29/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-286-6XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NORWALK	NRWLCT02SMD	08/24/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-286-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NORWALK	NRWLCT02SMD	08/24/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-286-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NORWALK	NRWLCT02SMD	08/24/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-286-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	09/10/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-287	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-288	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-289	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	DANBURY	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-290	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	11/14/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-290 is split into 1,000-number blocks - detail below
203-290-0XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	BRIDGEPORT	NOCLLIKNOWN	03/19/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-290-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	03/19/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-290-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	03/19/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-290-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	03/14/2014	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-290-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	04/02/2014	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-290-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	NWHNCT02GT0	04/04/2014	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-290-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NOCLLIKNOWN	06/27/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-290-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/05/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-290-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/05/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-290-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	11/14/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-291	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291 is split into 1,000-number blocks - detail below
203-291-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	N/A	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-291-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	09/26/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-292	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	FAIRFIELD	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-292 is split into 1,000-number blocks - detail below
203-292-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	FAIRFIELD	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-292-1XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	FAIRFIELD	NOCLLIKNOWN	03/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-292-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	FAIRFIELD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-292-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	FAIRFIELD	NRWLCT022MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT022MD))
203-292-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	FAIRFIELD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-292-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	FAIRFIELD	NRWLCT022MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT022MD))
203-292-6XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	FAIRFIELD	NRWLCT022MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT022MD))
203-292-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	FAIRFIELD	NWHNCT02GT0	06/20/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-292-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	FAIRFIELD	NRWLCT022MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT022MD))
203-292-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	FAIRFIELD	NRWLCT022MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT022MD))
203-293	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WESTPORT	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-293 is split into 1,000-number blocks - detail below
203-293-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-293-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WESTPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-293-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-293-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	01/12/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-293-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WESTPORT	NOCLLIKNOWN	11/09/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-293-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	11/13/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-293-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-293-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-293-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-293-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-294	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-295	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-295 is split into 1,000-number blocks - detail below
203-295-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-295-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/06/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-295-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-295-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	NOCLLIKNOWN	02/06/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-295-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	10/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-295-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/06/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-295-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-295-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	NOCLLIKNOWN	11/09/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-295-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NORWALK	NRWLCT02SMD	04/05/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-295-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/06/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-296	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-296 is split into 1,000-number blocks - detail below
203-296-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	06/28/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-296-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/22/2006	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-296-2XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/22/2006	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-296-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-296-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/26/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-296-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	06/08/2007	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-296-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	06/08/2007	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-296-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	06/08/2007	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-296-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	06/08/2007	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-296-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/22/2006	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-297	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DANBURY	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-297 is split into 1,000-number blocks - detail below
203-297-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	08/14/2007	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-297-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	04/19/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-297-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	09/26/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-297-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	12/10/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-297-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	12/10/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-297-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	11/06/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-297-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	07/15/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-297-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	01/08/2008	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-297-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-297-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	07/20/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-298	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW HAVEN	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-298 is split into 1,000-number blocks - detail below
203-298-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW HAVEN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-298-1XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NEW HAVEN	NOCLLIKNOWN	07/12/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-298-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	03/25/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-298-3XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NEW HAVEN	NOCLLIKNOWN	07/12/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-298-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NEW HAVEN	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-298-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW HAVEN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-298-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NEW HAVEN	NOCLLIKNOWN	07/12/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-298-7XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NEW HAVEN	NOCLLIKNOWN	07/12/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-298-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	02/16/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-298-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NEW HAVEN	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-299	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-299 is split into 1,000-number blocks - detail below
203-299-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	N/A	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-299-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	N/A	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-299-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-299-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	N/A	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-299-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	N/A	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-299-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	N/A	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-299-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	03/31/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-299-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	03/31/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-299-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	N/A	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-299-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	N/A	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-300	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	10/25/2001	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300 is split into 1,000-number blocks - detail below
203-300-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	10/11/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-300-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DANBURY	NOCLLIKNOWN	11/22/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-300-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-300-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-301	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301 is split into 1,000-number blocks - detail below
203-301-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	10/10/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-301-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-301-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MILFORD	NOCLLIKNOWN	05/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-301-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-303	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WALLINGFD	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-303 is split into 1,000-number blocks - detail below
203-303-0XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WALLINGFD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-303-1XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WALLINGFD	NOCLLIKNOWN	08/21/2017	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-303-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WALLINGFD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-303-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WALLINGFD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-303-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-303-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	WALLINGFD	HRFRCTASDS0	05/29/2003	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-303-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WALLINGFD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-303-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	NOCLLIKNOWN	06/01/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-303-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	NOCLLIKNOWN	12/14/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-303-9XXX	CT	TELNYX LLC	0018998724	RMD0001645	073H	WALLINGFD	NOCLLIKNOWN	04/20/2018	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-304	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEWTOWN	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-304 is split into 1,000-number blocks - detail below
203-304-0XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEWTOWN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-304-1XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	NEWTOWN	NOCLLIKNOWN	12/21/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-304-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEWTOWN	SMFRCTATXMD	09/15/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-304-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEWTOWN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-304-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEWTOWN	NOCLLIKNOWN	04/03/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-304-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEWTOWN	SMFRCTATXMD	05/01/2007	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-304-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEWTOWN	NOCLLIKNOWN	05/06/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-304-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEWTOWN	NOCLLIKNOWN	11/22/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-304-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NOCLLIKNOWN	08/10/2007	Prefix Type: ICO Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-304-9XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	NEWTOWN	NOCLLIKNOWN	11/12/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-305	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-306	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-306 is split into 1,000-number blocks - detail below
203-306-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-306-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-306-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-306-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-306-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-306-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MILFORD	HRFRCTASDS0	08/17/2004	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-306-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MILFORD	NOCLLIKNOWN	10/06/2008	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-306-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MILFORD	NOCLLIKNOWN	01/15/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-306-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MILFORD	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-306-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MILFORD	NOCLLIKNOWN	12/16/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-307	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	01/31/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-307 is split into 1,000-number blocks - detail below
203-307-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	FAIRFIELD	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-307-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	NOCLLIKNOWN	11/22/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-307-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	NOCLLIKNOWN	11/22/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-307-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	11/21/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-307-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	08/24/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-307-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	FAIRFIELD	NOCLLIKNOWN	02/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-307-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	02/07/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-307-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	02/07/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-307-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	02/07/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-307-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	02/07/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-308	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	10/22/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-308 is split into 1,000-number blocks - detail below
203-308-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	10/22/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-308-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	03/13/2009	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-308-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	ANSONIDRBY	NOCLLIKNOWN	07/12/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-308-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	07/16/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-308-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	ANSONIDRBY	SMFRCTATXMD	10/19/2009	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-308-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	ANSONIDRBY	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-308-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	08/27/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-308-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	07/09/2010	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-308-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	03/03/2010	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-308-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	12/22/2009	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-309	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	09/11/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-309 is split into 1,000-number blocks - detail below
203-309-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DARIEN	NOCLLIKNOWN	02/27/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-309-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DARIEN	NOCLLIKNOWN	03/20/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-309-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DARIEN	NOCLLIKNOWN	07/09/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-309-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DARIEN	NOCLLIKNOWN	05/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-309-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DARIEN	NOCLLIKNOWN	07/05/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-309-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	DARIEN	NOCLLIKNOWN	07/20/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-309-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DARIEN	NOCLLIKNOWN	08/08/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-309-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	09/14/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-309-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	09/14/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-309-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	09/14/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-310	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/16/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310 is split into 1,000-number blocks - detail below
203-310-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-310-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-312	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWFLCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: NEW FAIRFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWFLCT00RS1))
203-312 is split into 1,000-number blocks - detail below
203-312-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWFLCT00RS1	N/A	Prefix Type: ICO Switch Name: NEW FAIRFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWFLCT00RS1))
203-312-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	05/21/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-312-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWFLCT00RS1	N/A	Prefix Type: ICO Switch Name: NEW FAIRFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWFLCT00RS1))
203-312-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	12/08/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-312-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	06/07/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-312-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWFLCT00RS1	N/A	Prefix Type: ICO Switch Name: NEW FAIRFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWFLCT00RS1))
203-312-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	08/16/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-312-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	02/18/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-312-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWFLCT00RS1	N/A	Prefix Type: ICO Switch Name: NEW FAIRFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWFLCT00RS1))
203-312-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWFLCT00RS1	N/A	Prefix Type: ICO Switch Name: NEW FAIRFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWFLCT00RS1))
203-313	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313 is split into 1,000-number blocks - detail below
203-313-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	07/10/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	09/09/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	09/03/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	11/04/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	12/08/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-313-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-314	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-315	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	BRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Branford Switch Type: N/A LATA: Connecticut (920) Tandem: BRFRCT00DS0 🔧 Explore Switch(CLLI: BRFRCT00DS0))
203-316	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-317	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-317 is split into 1,000-number blocks - detail below
203-317-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-317-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	12/13/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-317-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-317-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	07/11/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-317-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-317-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-317-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-317-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	07/27/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-317-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	02/28/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-317-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	01/18/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-318	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	00/00/0000	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-318 is split into 1,000-number blocks - detail below
203-318-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-318-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-318-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-318-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-318-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MADISON	NOCLLIKNOWN	02/18/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-318-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-318-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MADISON	NOCLLIKNOWN	09/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-318-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MADISON	HRFRCTASDS0	10/26/2011	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-318-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT01RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT01RS0 🔧 Explore Switch(CLLI: MDSNCT01RS0))
203-318-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	MADISON	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-319	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	FAIRFIELD	FRFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Fairfield Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: FRFDCT00DS0 🔧 Explore Switch(CLLI: FRFDCT00DS0))
203-320	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/16/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320 is split into 1,000-number blocks - detail below
203-320-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-320-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-321	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-321 is split into 1,000-number blocks - detail below
203-321-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-321-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-321-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-321-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	07/06/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-321-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-321-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-321-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-321-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	07/06/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-321-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-321-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-322	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-323	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-324	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-325	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-326	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326 is split into 1,000-number blocks - detail below
203-326-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-326-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-326-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-326-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-327	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327 is split into 1,000-number blocks - detail below
203-327-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-327-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	08/21/2014	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-327-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-328	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-329	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-330	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-331	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-331 is split into 1,000-number blocks - detail below
203-331-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-331-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-331-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-331-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-331-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-331-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-331-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-331-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-331-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-331-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-332	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-333	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-334	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-335	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-336	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-337	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338 is split into 1,000-number blocks - detail below
203-338-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	08/11/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-338-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: CLEC Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: CLEC Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: CLEC Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: CLEC Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: CLEC Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: CLEC Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-338-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339 is split into 1,000-number blocks - detail below
203-339-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-339-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-339-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-339-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-339-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-341	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-342	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	BRIDGEPORT	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-343	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	01/18/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-343 is split into 1,000-number blocks - detail below
203-343-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	ANSONIDRBY	NOCLLIKNOWN	09/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-343-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	07/27/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-343-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	01/17/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-343-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	11/13/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-343-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	11/13/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-343-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	01/17/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-343-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	10/04/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-343-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	10/11/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-343-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	01/18/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-343-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	01/18/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-344	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	OLDGRNWICH	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-344 is split into 1,000-number blocks - detail below
203-344-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	OLDGRNWICH	NOCLLIKNOWN	09/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-344-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	OLDGRNWICH	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-344-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	NWHNCT02GT0	11/01/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-344-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	OLDGRNWICH	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-344-4XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	OLDGRNWICH	NOCLLIKNOWN	09/06/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-344-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	OLDGRNWICH	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-344-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	OLDGRNWICH	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-344-7XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	OLDGRNWICH	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-344-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	OLDGRNWICH	NOCLLIKNOWN	09/28/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-344-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	OLDGRNWICH	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345 is split into 1,000-number blocks - detail below
203-345-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-7XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-345-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-346	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346 is split into 1,000-number blocks - detail below
203-346-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	04/14/2003	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-346-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-346-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/15/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-346-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	07/21/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-348	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-349	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WESTPORT	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-349 is split into 1,000-number blocks - detail below
203-349-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WESTPORT	NOCLLIKNOWN	03/14/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-349-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	10/16/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-349-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	03/14/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-349-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	10/29/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-349-4XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WESTPORT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-349-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WESTPORT	NOCLLIKNOWN	08/25/2010	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-349-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WESTPORT	NOCLLIKNOWN	04/23/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-349-7XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WESTPORT	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-349-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	NOCLLIKNOWN	11/17/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-349-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WESTPORT	NOCLLIKNOWN	01/25/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	MADISON	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-350 is split into 1,000-number blocks - detail below
203-350-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MADISON	NOCLLIKNOWN	05/01/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	MADISON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-350-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MADISON	NOCLLIKNOWN	01/27/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MADISON	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350-4XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	MADISON	NOCLLIKNOWN	03/13/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	NWHNCT02GT0	08/10/2007	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-350-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MADISON	NOCLLIKNOWN	07/11/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350-7XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MADISON	NOCLLIKNOWN	06/05/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MADISON	NOCLLIKNOWN	06/02/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-350-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MADISON	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-351	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-352	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-353	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-354	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354 is split into 1,000-number blocks - detail below
203-354-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-7XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-354-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-355	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-356	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356 is split into 1,000-number blocks - detail below
203-356-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	09/22/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-356-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-356-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357 is split into 1,000-number blocks - detail below
203-357-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-357-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-357-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358 is split into 1,000-number blocks - detail below
203-358-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	12/13/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-358-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-358-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-359	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-360	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	12/10/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360 is split into 1,000-number blocks - detail below
203-360-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	12/11/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	12/11/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	01/11/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-360-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	12/11/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	02/28/2011	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-360-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	04/27/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	04/27/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	06/02/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	06/02/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-360-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	12/11/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-361	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	12/16/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-361 is split into 1,000-number blocks - detail below
203-361-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	02/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-361-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	02/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-361-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	02/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-361-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	12/17/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-361-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/05/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-361-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	02/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-361-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	01/13/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-361-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	01/13/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-361-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	01/13/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-361-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	09/14/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-362	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-362 is split into 1,000-number blocks - detail below
203-362-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-362-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-362-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-362-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-362-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-362-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	02/06/2006	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-362-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-362-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-362-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-362-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-363	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363 is split into 1,000-number blocks - detail below
203-363-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	04/19/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-363-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-363-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-364	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-364 is split into 1,000-number blocks - detail below
203-364-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	N/A	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-364-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	N/A	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-364-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	N/A	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-364-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	N/A	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-364-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEWTOWN	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-364-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEWTOWN	NOCLLIKNOWN	03/22/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-364-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEWTOWN	BLFDCTAP2MD	11/25/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-364-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEWTOWN	BLFDCTAP2MD	11/25/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-364-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEWTOWN	SMFRCTATXMD	07/18/2001	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-364-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	N/A	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-365	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-366	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-367	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368 is split into 1,000-number blocks - detail below
203-368-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-368-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-368-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-369	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	10/07/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369 is split into 1,000-number blocks - detail below
203-369-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	10/09/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	10/09/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	10/09/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	12/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	12/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	12/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	12/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	12/11/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	12/11/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-369-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	12/11/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-370	CT	AMERICAN MESSAGING SERVICES, LLC		N/A	9748	NEW HAVEN	HRFRCT0379Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-371	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-372	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-373	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-374	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-375	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-376	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-377	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-378	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-379	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-379 is split into 1,000-number blocks - detail below
203-379-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-379-1XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	MERIDEN	NOCLLIKNOWN	03/16/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-379-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	01/19/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-379-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-379-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-379-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	N/A	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-379-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	01/18/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-379-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	02/11/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-379-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	02/11/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-379-9XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	MERIDEN	NOCLLIKNOWN	02/10/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-380	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-381	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-382	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382 is split into 1,000-number blocks - detail below
203-382-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	12/13/2006	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-382-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	12/13/2006	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-382-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-382-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-383	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383 is split into 1,000-number blocks - detail below
203-383-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	03/13/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-383-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	06/08/2006	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	07/02/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-383-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-383-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	10/18/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-384	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-385	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385 is split into 1,000-number blocks - detail below
203-385-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	06/27/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-385-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-385-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-386	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-387	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-388	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-388 is split into 1,000-number blocks - detail below
203-388-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-388-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-388-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-388-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-388-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-388-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/07/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-388-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/07/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-388-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-388-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	03/13/2008	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-388-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-389	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-390	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	SMFRCTCTDS0	11/10/2015	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-390 is split into 1,000-number blocks - detail below
203-390-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	01/07/2016	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-390-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	01/07/2016	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-390-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	SMFRCTCTDS0	11/11/2015	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-390-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	SMFRCTCTDS0	11/11/2015	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-390-4XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	SMFRCTCTDS0	11/11/2015	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-390-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	12/30/2015	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-390-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	SMFRCTCTDS0	12/01/2016	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-390-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	01/11/2016	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-390-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	01/07/2016	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-390-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	01/11/2016	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-391	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-391 is split into 1,000-number blocks - detail below
203-391-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-391-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	05/27/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-391-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-391-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/11/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-391-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	02/23/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-391-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	10/20/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-391-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	05/30/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-391-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	06/22/2007	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-391-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	12/28/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-391-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-392	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392 is split into 1,000-number blocks - detail below
203-392-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	03/20/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-392-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	09/10/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-392-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: IPES Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: IPES Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: IPES Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: IPES Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-392-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: IPES Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-393	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-393 is split into 1,000-number blocks - detail below
203-393-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	N/A	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-393-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	N/A	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-393-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	N/A	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-393-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	N/A	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-393-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	N/A	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-393-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	12/14/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-393-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	12/14/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-393-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	N/A	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-393-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	12/14/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-393-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	BTHNCT00RS0	N/A	Prefix Type: ICO Switch Name: Bethany Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: BTHNCT00RS0 🔧 Explore Switch(CLLI: BTHNCT00RS0))
203-394	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-394 is split into 1,000-number blocks - detail below
203-394-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-394-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-394-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-394-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-394-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-394-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-394-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-394-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-394-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-394-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-395	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395 is split into 1,000-number blocks - detail below
203-395-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-395-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-396	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-397	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397 is split into 1,000-number blocks - detail below
203-397-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	03/20/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-397-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-397-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSTVCT00DS0	N/A	Prefix Type: ICO Switch Name: Westville Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSTVCT00DS0 🔧 Explore Switch(CLLI: WSTVCT00DS0))
203-398	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	NORWALK	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-399	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-399 is split into 1,000-number blocks - detail below
203-399-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-399-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-399-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/23/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-399-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/23/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-399-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/23/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-399-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-399-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/23/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-399-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/23/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-399-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/23/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-399-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	10/06/2014	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-400	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	02/19/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400 is split into 1,000-number blocks - detail below
203-400-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	02/23/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	TRUMBULL	SMFRCTDSDS0	05/29/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-400-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	04/07/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	04/07/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-400-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	TRUMBULL	MDTWCTNIBMD	06/15/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-401	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401 is split into 1,000-number blocks - detail below
203-401-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	02/20/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-401-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-401-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	06/14/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-401-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	08/11/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-402	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402 is split into 1,000-number blocks - detail below
203-402-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	03/14/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-402-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	HNTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Huntington Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: HNTNCT00DS0 🔧 Explore Switch(CLLI: HNTNCT00DS0))
203-402-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	HUNTINGTON	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-402-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	HUNTINGTON	NOCLLIKNOWN	06/06/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-403	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	RIDGEFIELD	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-403 is split into 1,000-number blocks - detail below
203-403-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	RIDGEFIELD	NOCLLIKNOWN	03/20/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-403-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	RIDGEFIELD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-403-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	RIDGEFIELD	NOCLLIKNOWN	05/01/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-403-3XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	RIDGEFIELD	NOCLLIKNOWN	11/14/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-403-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	RIDGEFIELD	SMFRCTATXMD	09/15/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-403-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	RIDGEFIELD	NWHNCT02GT0	08/10/2007	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-403-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	RIDGEFIELD	NOCLLIKNOWN	02/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-403-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	RIDGEFIELD	NOCLLIKNOWN	05/11/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-403-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	RIDGEFIELD	NOCLLIKNOWN	10/09/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-403-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	RIDGEFIELD	NOCLLIKNOWN	04/17/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-404	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404 is split into 1,000-number blocks - detail below
203-404-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404-2XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NEW HAVEN	NOCLLIKNOWN	12/14/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-404-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	12/14/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	06/25/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	03/13/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	08/25/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	11/05/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-404-8XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NEW HAVEN	NOCLLIKNOWN	05/19/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-404-9XXX	CT	IP HORIZON LLC	0027469766	RMD0001571	515J	NEW HAVEN	NOCLLIKNOWN	06/14/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-405	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WOODBURY	SMFRCTATXMD	04/04/2001	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-405 is split into 1,000-number blocks - detail below
203-405-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	04/20/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-405-1XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	WOODBURY	WLMNCT132MD	08/26/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WLMNCT132MD))
203-405-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WOODBURY	SMFRCTATXMD	06/08/2001	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-405-3XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	WOODBURY	WLMNCT132MD	09/14/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WLMNCT132MD))
203-405-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	WOODBURY	HRFRCTASDS0	09/18/2008	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-405-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-405-6XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	WOODBURY	WLMNCT132MD	07/26/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WLMNCT132MD))
203-405-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WOODBURY	SMFRCTATXMD	05/11/2012	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-405-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	12/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-405-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WOODBURY	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-406	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406 is split into 1,000-number blocks - detail below
203-406-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	06/23/2010	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-406-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-406-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS1	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS1 🔧 Explore Switch(CLLI: SMFRCT01DS1))
203-407	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407 is split into 1,000-number blocks - detail below
203-407-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-407-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	10/11/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-408	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	REDDING	HRFRCT0379Z	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-408 is split into 1,000-number blocks - detail below
203-408-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	REDDING	HRFRCT0379Z	10/26/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-408-1XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	REDDING	NOCLLIKNOWN	04/04/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-408-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	REDDING	HRFRCT0379Z	01/15/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-408-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	REDDING	HRFRCT0379Z	04/27/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-408-4XXX	CT	IP HORIZON LLC	0027469766	RMD0001571	515J	REDDING	NOCLLIKNOWN	07/07/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-408-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	REDDING	NWHNCT02GT0	06/23/2011	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-408-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	REDDING	NOCLLIKNOWN	02/26/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-408-7XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	REDDING	NOCLLIKNOWN	04/18/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-408-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	REDDING	NOCLLIKNOWN	04/04/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-408-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	REDDING	NOCLLIKNOWN	11/14/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-409	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	OLDGRNWICH	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-409 is split into 1,000-number blocks - detail below
203-409-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	OLDGRNWICH	SMFRCTATXMD	10/28/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-409-1XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	OLDGRNWICH	NOCLLIKNOWN	09/28/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-409-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	OLDGRNWICH	NOCLLIKNOWN	04/24/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-409-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	OLDGRNWICH	SMFRCTATXMD	08/13/2001	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-409-4XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	OLDGRNWICH	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-409-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	OLDGRNWICH	NOCLLIKNOWN	01/13/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-409-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	OLDGRNWICH	NOCLLIKNOWN	05/28/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-409-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	08/13/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-409-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	OLDGRNWICH	NOCLLIKNOWN	09/28/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-410	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410 is split into 1,000-number blocks - detail below
203-410-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-410-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-412	CT	AMERICAN MESSAGING SERVICES, LLC		N/A	9748	NEW HAVEN	HRFRCT0379Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-414	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-415	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	04/12/2001	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-416	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-416 is split into 1,000-number blocks - detail below
203-416-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-416-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	05/11/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-416-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	BRIDGEPORT	BRPTCT03DS0	N/A	Prefix Type: CLEC Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-416-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-416-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-416-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	02/12/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-416-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	NOCLLIKNOWN	01/21/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-416-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-416-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	NOCLLIKNOWN	09/18/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-416-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT03DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRPTCT03DS0 🔧 Explore Switch(CLLI: BRPTCT03DS0))
203-417	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-418	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	FAIRFIELD	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-418 is split into 1,000-number blocks - detail below
203-418-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	FAIRFIELD	BLFDCTAP2MD	02/19/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-418-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	FAIRFIELD	BLFDCTAP2MD	12/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-418-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	FAIRFIELD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-418-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	07/07/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-418-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	02/25/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-418-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	12/08/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-418-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	12/08/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-418-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	FAIRFIELD	NOCLLIKNOWN	07/16/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-418-8XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	FAIRFIELD	NOCLLIKNOWN	03/16/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-418-9XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	FAIRFIELD	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-419	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-419 is split into 1,000-number blocks - detail below
203-419-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-419-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-419-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-419-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-419-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-419-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	10/01/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-419-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	05/27/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-419-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	12/01/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-419-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	12/01/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-419-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-420	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT04RS0	00/00/0000	Prefix Type: ICO Switch Name: MERIDEN Switch Type: AT&T Tech Optic Remote Switch LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MRDNCT04RS0))
203-421	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	00/00/0000	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421 is split into 1,000-number blocks - detail below
203-421-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MADISON	NOCLLIKNOWN	08/04/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-421-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421-6XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MADISON	NOCLLIKNOWN	09/03/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-421-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-421-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MADISON	MDSNCT02RS0	N/A	Prefix Type: ICO Switch Name: Madison Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: MDSNCT02RS0 🔧 Explore Switch(CLLI: MDSNCT02RS0))
203-423	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WILTON	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-423 is split into 1,000-number blocks - detail below
203-423-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WILTON	NOCLLIKNOWN	12/08/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-423-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NOCLLIKNOWN	08/03/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-423-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WILTON	SMFRCTDSDS0	05/29/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-423-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WILTON	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-423-4XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WILTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-423-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WILTON	NOCLLIKNOWN	11/01/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-423-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WILTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-423-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WILTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-423-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WILTON	SMFRCTDSDS0	08/22/2012	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-423-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WILTON	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-424	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	06/29/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-424 is split into 1,000-number blocks - detail below
203-424-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DARIEN	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-424-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DARIEN	NOCLLIKNOWN	01/27/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-424-2XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	DARIEN	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-424-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	03/14/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-424-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	03/14/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-424-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DARIEN	NWHNCT02GT0	08/10/2007	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-424-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DARIEN	NOCLLIKNOWN	03/14/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-424-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	09/04/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-424-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	09/04/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-424-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	09/04/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-425	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-426	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEWTOWN	NWTWCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Newtown Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: NWTWCT00DS0 🔧 Explore Switch(CLLI: NWTWCT00DS0))
203-427	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MERIDEN	HRFRCTASDS0	00/00/0000	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-427 is split into 1,000-number blocks - detail below
203-427-0XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	MERIDEN	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-427-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	01/18/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-427-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MERIDEN	HRFRCTASDS0	N/A	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-427-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	12/04/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-427-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MERIDEN	HRFRCTASDS0	N/A	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-427-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	12/04/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-427-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-427-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	02/21/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-427-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MERIDEN	NOCLLIKNOWN	05/07/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-427-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MERIDEN	HRFRCTASDS0	N/A	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-428	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-428 is split into 1,000-number blocks - detail below
203-428-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-428-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	07/19/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-428-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	06/05/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-428-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-428-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	NOCLLIKNOWN	07/01/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-428-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	08/19/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-428-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	NWHNCT02GT0	06/08/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-428-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	08/14/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-428-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	07/27/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-428-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/11/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-429	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WESTPORT	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-429 is split into 1,000-number blocks - detail below
203-429-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WESTPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-429-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WESTPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-429-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WESTPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-429-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	NOCLLIKNOWN	08/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-429-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	04/01/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-429-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	04/01/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-429-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	WESTPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-429-7XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	WESTPORT	NOCLLIKNOWN	06/12/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-429-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	NOCLLIKNOWN	08/28/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-429-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WESTPORT	NOCLLIKNOWN	03/29/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-430	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-431	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	RIDGEFIELD	RDFDCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: RIDGEFIELD Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: RDFDCT00RS1))
203-432	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: CLEC Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-433	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	BRANFORD	HRFRCTCR3MD	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-433 is split into 1,000-number blocks - detail below
203-433-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRANFORD	NOCLLIKNOWN	05/05/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-433-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	11/09/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-433-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	11/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-433-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	BRANFORD	HRFRCTASDS0	05/27/2008	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-433-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	BRANFORD	HRFRCTCR3MD	08/04/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-433-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRANFORD	NOCLLIKNOWN	01/10/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-433-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	BRANFORD	NOCLLIKNOWN	06/05/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-433-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	08/23/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-433-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRANFORD	NOCLLIKNOWN	11/14/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-434	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-435	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	NRTNMAAACM6	00/00/0000	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM6))
203-436	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-437	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	WATERBURY	HRFRCTASDS0	00/00/0000	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-437 is split into 1,000-number blocks - detail below
203-437-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	09/18/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-437-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	09/18/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-437-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	11/12/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-437-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	WATERBURY	HRFRCTASDS0	N/A	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-437-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	02/05/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-437-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	01/22/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-437-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	01/25/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-437-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	10/15/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-437-8XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	08/19/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-437-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	WATERBURY	HRFRCTASDS0	N/A	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-438	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	RIDGEFIELD	RDFDCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: RIDGEFIELD Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: RDFDCT00RS1))
203-439	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	CHESHIRE	HRFRCTCR3MD	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-439 is split into 1,000-number blocks - detail below
203-439-0XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	CHESHIRE	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-439-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	CHESHIRE	NOCLLIKNOWN	09/13/2006	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-439-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	CHESHIRE	HRFRCTCR3MD	09/06/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-439-3XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	CHESHIRE	NOCLLIKNOWN	07/12/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-439-4XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	CHESHIRE	NOCLLIKNOWN	07/12/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-439-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	CHESHIRE	NOCLLIKNOWN	09/13/2017	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-439-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	06/14/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-439-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	CHESHIRE	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-439-8XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	CHESHIRE	HRFRCTCR3MD	09/11/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-439-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	CHESHIRE	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-440	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-440 is split into 1,000-number blocks - detail below
203-440-0XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-440-1XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-440-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-440-3XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-440-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-440-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	06/14/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-440-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/04/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-440-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/04/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-440-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	02/28/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-440-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	05/17/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-441	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WOLCOTT	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-441 is split into 1,000-number blocks - detail below
203-441-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOLCOTT	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOLCOTT	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-2XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	WOLCOTT	NOCLLIKNOWN	09/06/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOLCOTT	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WOLCOTT	NOCLLIKNOWN	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOLCOTT	NOCLLIKNOWN	12/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-6XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WOLCOTT	NOCLLIKNOWN	03/19/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOLCOTT	NOCLLIKNOWN	06/05/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOLCOTT	NOCLLIKNOWN	08/26/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-441-9XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WOLCOTT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-442	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW CANAAN	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-442 is split into 1,000-number blocks - detail below
203-442-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	09/10/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-442-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW CANAAN	NOCLLIKNOWN	11/11/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-442-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW CANAAN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-442-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW CANAAN	NOCLLIKNOWN	07/14/2003	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-442-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW CANAAN	NOCLLIKNOWN	10/29/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-442-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW CANAAN	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-442-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW CANAAN	NOCLLIKNOWN	08/07/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-442-7XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	NEW CANAAN	NOCLLIKNOWN	09/12/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-442-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	12/22/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-442-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW CANAAN	NOCLLIKNOWN	04/04/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-443	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MERIDEN	HRFRCTASDS0	00/00/0000	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-443 is split into 1,000-number blocks - detail below
203-443-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	01/31/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-443-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	10/15/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-443-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	03/14/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-443-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	10/13/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-443-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	02/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-443-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MERIDEN	HRFRCTCR3MD	08/27/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-443-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	11/24/2015	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-443-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	05/27/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-443-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	05/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-443-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	11/11/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-444	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-445	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-445 is split into 1,000-number blocks - detail below
203-445-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	N/A	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-445-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	N/A	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-445-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	N/A	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-445-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	12/13/2007	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-445-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	10/11/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-445-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	N/A	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-445-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	NOCLLIKNOWN	02/18/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-445-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	N/A	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-445-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	N/A	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-445-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	N/A	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-446	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	ANSONIDRBY	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-446 is split into 1,000-number blocks - detail below
203-446-0XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	ANSONIDRBY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-446-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	11/15/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-446-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	NOCLLIKNOWN	12/14/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-446-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	NOCLLIKNOWN	12/14/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-446-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	NOCLLIKNOWN	07/21/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-446-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	NOCLLIKNOWN	01/25/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-446-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	05/26/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-446-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	09/26/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-446-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	ANSONIDRBY	NOCLLIKNOWN	08/15/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-446-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	ANSONIDRBY	SMFRCTATXMD	01/10/2002	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-447	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	HUNTINGTON	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-447 is split into 1,000-number blocks - detail below
203-447-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	HUNTINGTON	NOCLLIKNOWN	04/16/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-447-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	HUNTINGTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-447-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	HUNTINGTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-447-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	HUNTINGTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-447-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	HUNTINGTON	HRFRCTASDS0	10/02/2014	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-447-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	HUNTINGTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-447-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	HUNTINGTON	HRFRCTASDS0	12/29/2014	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-447-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	HUNTINGTON	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-447-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	HUNTINGTON	HRFRCTASDS0	05/29/2003	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-447-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	HUNTINGTON	NOCLLIKNOWN	04/17/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-448	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DANBURY	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-448 is split into 1,000-number blocks - detail below
203-448-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	01/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-448-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DANBURY	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-448-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DANBURY	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-448-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DANBURY	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-448-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DANBURY	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-448-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWHNCT02GT0	09/12/2011	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-448-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	01/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-448-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-448-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	06/07/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-448-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	09/07/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-449	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449 is split into 1,000-number blocks - detail below
203-449-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-449-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-450	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	05/12/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-450 is split into 1,000-number blocks - detail below
203-450-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	05/15/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-450-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	05/15/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-450-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	10/20/2008	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-450-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	12/17/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-450-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-450-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	10/07/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-450-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-450-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	07/08/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-450-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	04/07/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-450-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-451	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-452	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-453	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	GUFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Guilford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: GUFDCT00DS0 🔧 Explore Switch(CLLI: GUFDCT00DS0))
203-454	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	WSPTCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Westport Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WSPTCT00DS0 🔧 Explore Switch(CLLI: WSPTCT00DS0))
203-455	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-455 is split into 1,000-number blocks - detail below
203-455-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-455-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	06/08/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-455-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-455-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-455-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	10/18/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-455-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-455-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	07/02/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-455-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	05/13/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-455-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	06/21/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-455-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	BRIDGEPORT	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-456	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	12/06/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-456 is split into 1,000-number blocks - detail below
203-456-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	12/14/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-456-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	03/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-456-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	12/29/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-456-3XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DANBURY	NOCLLIKNOWN	12/06/2012	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-456-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	05/23/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-456-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	05/23/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-456-6XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DANBURY	NOCLLIKNOWN	01/16/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-456-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	06/26/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-456-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	DANBURY	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-456-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	DANBURY	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-457	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	NWHNCT02GT0	00/00/0000	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-457 is split into 1,000-number blocks - detail below
203-457-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-457-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-457-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-457-3XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	GUILFORD	NOCLLIKNOWN	09/20/2018	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-457-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-457-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	GUILFORD	NOCLLIKNOWN	01/23/2015	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-457-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-457-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	NWHNCT02GT0	08/10/2007	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-457-8XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-457-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-458	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	GUFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Guilford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: GUFDCT00DS0 🔧 Explore Switch(CLLI: GUFDCT00DS0))
203-459	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	TRUMBULL	TMBLCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: TRUMBULL Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: TMBLCT00DS0))
203-460	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	00/00/0000	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-460 is split into 1,000-number blocks - detail below
203-460-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	07/08/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-460-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	01/09/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-460-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	10/19/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-460-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	09/21/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-460-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	06/13/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-460-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	01/15/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-460-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	06/14/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-461	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-461 is split into 1,000-number blocks - detail below
203-461-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-461-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-461-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/13/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-461-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/14/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-461-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-461-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-461-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-461-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-461-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-461-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-462	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-463	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	SEYMOUR	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-463 is split into 1,000-number blocks - detail below
203-463-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	SEYMOUR	NWHNCT02GT0	03/11/2010	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-463-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	SEYMOUR	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-463-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	NOCLLIKNOWN	11/21/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-463-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	SEYMOUR	NOCLLIKNOWN	07/27/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-463-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	NOCLLIKNOWN	11/15/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-463-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	SEYMOUR	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-463-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	SEYMOUR	HRFRCTASDS0	05/27/2008	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-463-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	SEYMOUR	SMFRCTATXMD	08/27/2003	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-463-8XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	SEYMOUR	NOCLLIKNOWN	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-463-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	SEYMOUR	SMFRCTATXMD	01/30/2002	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-464	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-465	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-465 is split into 1,000-number blocks - detail below
203-465-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-465-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-465-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	05/02/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-465-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	08/15/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-465-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-465-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-465-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-465-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-465-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	10/30/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-465-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	11/30/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-466	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466 is split into 1,000-number blocks - detail below
203-466-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	N/A	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-466-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	05/19/2010	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-466-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	05/27/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-467	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-468	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: EAST HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00DS0))
203-469	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	EHVNCT00CG0	00/00/0000	Prefix Type: ICO Switch Name: N/A Switch Type: WECO 1AESS LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: EHVNCT00CG0))
203-470	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-477	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	NEW HAVEN	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-479	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSHNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: West Haven Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WSHNCT00DS0 🔧 Explore Switch(CLLI: WSHNCT00DS0))
203-479 is split into 1,000-number blocks - detail below
203-479-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	03/20/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-479-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSHNCT00DS0	N/A	Prefix Type: ICO Switch Name: West Haven Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WSHNCT00DS0 🔧 Explore Switch(CLLI: WSHNCT00DS0))
203-479-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	03/03/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-479-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSHNCT00DS0	N/A	Prefix Type: ICO Switch Name: West Haven Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WSHNCT00DS0 🔧 Explore Switch(CLLI: WSHNCT00DS0))
203-479-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSHNCT00DS0	N/A	Prefix Type: ICO Switch Name: West Haven Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WSHNCT00DS0 🔧 Explore Switch(CLLI: WSHNCT00DS0))
203-479-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSHNCT00DS0	N/A	Prefix Type: ICO Switch Name: West Haven Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WSHNCT00DS0 🔧 Explore Switch(CLLI: WSHNCT00DS0))
203-479-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	06/12/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-479-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSHNCT00DS0	N/A	Prefix Type: ICO Switch Name: West Haven Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WSHNCT00DS0 🔧 Explore Switch(CLLI: WSHNCT00DS0))
203-479-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	WSHNCT00DS0	N/A	Prefix Type: ICO Switch Name: West Haven Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WSHNCT00DS0 🔧 Explore Switch(CLLI: WSHNCT00DS0))
203-479-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	03/20/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-480	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480 is split into 1,000-number blocks - detail below
203-480-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	03/24/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	03/26/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	04/04/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	04/11/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	04/21/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	04/23/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-480-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-481	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	BRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Branford Switch Type: N/A LATA: Connecticut (920) Tandem: BRFRCT00DS0 🔧 Explore Switch(CLLI: BRFRCT00DS0))
203-482	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	03/23/2001	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482 is split into 1,000-number blocks - detail below
203-482-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	07/14/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-482-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-483	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	BRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Branford Switch Type: N/A LATA: Connecticut (920) Tandem: BRFRCT00DS0 🔧 Explore Switch(CLLI: BRFRCT00DS0))
203-484	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484 is split into 1,000-number blocks - detail below
203-484-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	03/19/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-484-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-484-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRANFORD	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-484-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	NBFRCT00RS0	N/A	Prefix Type: ICO Switch Name: North Branford Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: NBFRCT00RS0 🔧 Explore Switch(CLLI: NBFRCT00RS0))
203-486	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486 is split into 1,000-number blocks - detail below
203-486-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	SOBYCT00DS0	N/A	Prefix Type: ICO Switch Name: SOUTHBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SOBYCT00DS0))
203-486-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	02/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-486-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WOODBURY	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-487	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTQI9MD	01/03/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-487 is split into 1,000-number blocks - detail below
203-487-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	04/27/2001	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-487-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	08/22/2002	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-487-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	12/06/2024	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-487-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-487-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-487-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-487-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	11/25/2002	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-487-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	09/29/2003	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-487-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTQI9MD	09/30/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-487-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-488	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRANFORD	BRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Branford Switch Type: N/A LATA: Connecticut (920) Tandem: BRFRCT00DS0 🔧 Explore Switch(CLLI: BRFRCT00DS0))
203-490	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NAUGATUCK	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-490 is split into 1,000-number blocks - detail below
203-490-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NAUGATUCK	NOCLLIKNOWN	01/05/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-490-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NAUGATUCK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-490-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NAUGATUCK	NOCLLIKNOWN	01/13/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-490-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	NAUGATUCK	HRFRCTASDS0	02/13/2007	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-490-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NAUGATUCK	NOCLLIKNOWN	07/21/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-490-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NAUGATUCK	NOCLLIKNOWN	08/28/2009	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-490-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NAUGATUCK	NOCLLIKNOWN	08/10/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-490-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NAUGATUCK	NOCLLIKNOWN	12/16/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-490-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NAUGATUCK	NOCLLIKNOWN	03/23/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-490-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NAUGATUCK	NOCLLIKNOWN	11/21/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-491	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEWTOWN	HRFRCT0379Z	02/12/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-491 is split into 1,000-number blocks - detail below
203-491-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEWTOWN	HRFRCT0379Z	02/16/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-491-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEWTOWN	HRFRCT0379Z	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-491-2XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	NEWTOWN	NOCLLIKNOWN	05/01/2012	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-491-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	NEWTOWN	HRFRCTASDS0	08/02/2012	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-491-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEWTOWN	HRFRCT0379Z	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-491-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEWTOWN	HRFRCT0379Z	09/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-491-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEWTOWN	BLFDCTAP2MD	01/14/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-491-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEWTOWN	NOCLLIKNOWN	03/08/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-491-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEWTOWN	BLFDCTAP2MD	10/14/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-491-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEWTOWN	BLFDCTAP2MD	02/22/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-492	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492 is split into 1,000-number blocks - detail below
203-492-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-492-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	02/16/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-493	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GEORGETOWN	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-493 is split into 1,000-number blocks - detail below
203-493-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GEORGETOWN	SMFRCTPU4MD	10/15/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-493-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GEORGETOWN	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-493-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GEORGETOWN	SMFRCTPU4MD	12/08/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-493-3XXX	CT	IP HORIZON LLC	0027469766	RMD0001571	515J	GEORGETOWN	NOCLLIKNOWN	07/11/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-493-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GEORGETOWN	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-493-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	GEORGETOWN	NOCLLIKNOWN	08/23/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-493-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GEORGETOWN	NOCLLIKNOWN	05/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-493-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GEORGETOWN	NOCLLIKNOWN	07/18/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-493-8XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	GEORGETOWN	NOCLLIKNOWN	03/16/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-493-9XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	GEORGETOWN	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-494	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-495	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497 is split into 1,000-number blocks - detail below
203-497-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	NEW HAVEN	HRFRCTASDS0	05/27/2008	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-497-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-497-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-498	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499 is split into 1,000-number blocks - detail below
203-499-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	NEW HAVEN	HRFRCTASDS0	N/A	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-499-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-499-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	10/18/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-499-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	09/07/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-499-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	09/07/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-500	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	10/25/2001	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-501	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	07/09/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-501 is split into 1,000-number blocks - detail below
203-501-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	07/09/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-501-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	09/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-501-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	02/17/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-501-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	01/05/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-501-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	02/17/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-501-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	02/17/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-501-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	02/17/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-501-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	02/28/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-501-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	02/28/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-501-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	02/28/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-502	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-502 is split into 1,000-number blocks - detail below
203-502-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-502-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/25/2005	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-502-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-502-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	08/19/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-502-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-502-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-502-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	SRFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Stratford Switch Type: N/A LATA: Connecticut (920) Tandem: SRFRCT00DS0 🔧 Explore Switch(CLLI: SRFRCT00DS0))
203-502-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	NOCLLIKNOWN	06/29/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-502-8XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	BRIDGEPORT	NOCLLIKNOWN	12/21/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-502-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/26/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-503	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-503 is split into 1,000-number blocks - detail below
203-503-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-503-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	11/14/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-503-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-503-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-503-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/17/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-503-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-503-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-503-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	12/13/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-503-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	12/13/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-503-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-504	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	02/12/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-504 is split into 1,000-number blocks - detail below
203-504-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	03/15/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-504-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	02/19/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-504-2XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	08/24/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-504-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	11/03/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-504-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	02/03/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-504-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	04/06/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-504-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	01/06/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-504-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	NOCLLIKNOWN	04/07/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-504-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	08/24/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-504-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	NOCLLIKNOWN	12/13/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-505	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505 is split into 1,000-number blocks - detail below
203-505-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/08/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/08/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	01/04/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	12/08/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	06/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NWHNCT02GT0	06/21/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-505-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	01/11/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	07/07/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-505-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	10/20/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-506	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-507	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507 is split into 1,000-number blocks - detail below
203-507-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	03/17/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	03/17/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	01/11/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-507-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-507-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-508	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	02/03/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-508 is split into 1,000-number blocks - detail below
203-508-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	05/19/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-508-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	02/13/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-508-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/17/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-508-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/17/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-508-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	03/15/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-508-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	12/08/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-508-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-508-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-508-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-508-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-509	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509 is split into 1,000-number blocks - detail below
203-509-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-509-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510 is split into 1,000-number blocks - detail below
203-510-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-510-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-512	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-513	CT	AT&T - LOCAL (AT&T)		N/A	7421	HUNTINGTON	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-513 is split into 1,000-number blocks - detail below
203-513-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	HUNTINGTON	NOCLLIKNOWN	02/07/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-513-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	HUNTINGTON	NOCLLIKNOWN	02/11/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-513-2XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	HUNTINGTON	NOCLLIKNOWN	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-513-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	NOCLLIKNOWN	06/26/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-513-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	HUNTINGTON	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-513-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	NOCLLIKNOWN	04/26/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-513-6XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	HUNTINGTON	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-513-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HUNTINGTON	NWHNCT02GT0	06/20/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-513-8XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	HUNTINGTON	NOCLLIKNOWN	08/27/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-513-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	HUNTINGTON	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-514	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	MERIDEN	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-514 is split into 1,000-number blocks - detail below
203-514-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-514-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	02/18/2016	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-514-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-514-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	MERIDEN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-514-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	11/25/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-514-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	MERIDEN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-514-6XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	MERIDEN	NOCLLIKNOWN	08/26/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-514-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	07/22/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-514-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	03/28/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-514-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	03/28/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-515	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515 is split into 1,000-number blocks - detail below
203-515-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-515-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-516	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-516 is split into 1,000-number blocks - detail below
203-516-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	ANSONIDRBY	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-516-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	09/26/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-516-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-516-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-516-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	ANSONIDRBY	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-516-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	ANSONIDRBY	NOCLLIKNOWN	10/15/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-516-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	ANSONIDRBY	HRFRCT0370Z	04/03/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-516-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	ANSONIDRBY	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-516-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-516-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	01/06/2026	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-517	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-517 is split into 1,000-number blocks - detail below
203-517-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTPU4MD	02/23/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-517-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	11/07/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-517-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	06/11/2007	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-517-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	07/13/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-517-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-517-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	07/14/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-517-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	07/14/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-517-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	07/14/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-517-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	07/14/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-517-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	02/07/2008	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-518	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	07/02/2001	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-518 is split into 1,000-number blocks - detail below
203-518-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-518-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-518-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-518-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	11/07/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-518-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-518-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	06/02/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-518-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	06/02/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-518-7XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	WATERBURY	NOCLLIKNOWN	03/13/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-518-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-518-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-519	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/09/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519 is split into 1,000-number blocks - detail below
203-519-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-519-7XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	WATERBURY	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-519-8XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	WATERBURY	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-519-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	02/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-520	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	05/30/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-521	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-522	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522 is split into 1,000-number blocks - detail below
203-522-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	09/28/2004	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-522-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	09/28/2004	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-522-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-522-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-523	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523 is split into 1,000-number blocks - detail below
203-523-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	04/27/2001	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-523-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523-4XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	12/27/2002	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-523-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523-8XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NORWALK	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-523-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	12/29/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-524	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524 is split into 1,000-number blocks - detail below
203-524-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	07/30/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	07/30/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	08/21/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	05/13/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-524-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	05/13/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-525	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-526	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526 is split into 1,000-number blocks - detail below
203-526-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-526-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-527	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	PRSPCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Prospect Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: PRSPCT00RS0 🔧 Explore Switch(CLLI: PRSPCT00RS0))
203-527 is split into 1,000-number blocks - detail below
203-527-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-527-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	12/27/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-527-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	10/08/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-527-3XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-527-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-527-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-527-6XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	02/07/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-527-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	02/07/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-527-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	PRSPCT00RS0	06/08/2006	Prefix Type: ICO Switch Name: Prospect Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: PRSPCT00RS0 🔧 Explore Switch(CLLI: PRSPCT00RS0))
203-527-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	PRSPCT00RS0	N/A	Prefix Type: ICO Switch Name: Prospect Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: PRSPCT00RS0 🔧 Explore Switch(CLLI: PRSPCT00RS0))
203-528	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-528 is split into 1,000-number blocks - detail below
203-528-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-528-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	12/05/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-528-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	09/21/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-528-3XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	08/09/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-528-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	08/09/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-528-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	12/05/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-528-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	12/05/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-528-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	08/21/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-528-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	12/05/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-528-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	WATERBURY	NOCLLIKNOWN	03/09/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529	CT	AT&T - LOCAL (AT&T)		N/A	7421	WILTON	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-529 is split into 1,000-number blocks - detail below
203-529-0XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	WILTON	NOCLLIKNOWN	06/30/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WILTON	NOCLLIKNOWN	11/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WILTON	NOCLLIKNOWN	05/02/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WILTON	NOCLLIKNOWN	08/20/2009	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WILTON	NOCLLIKNOWN	03/22/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WILTON	NOCLLIKNOWN	03/08/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WILTON	NOCLLIKNOWN	02/15/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WILTON	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WILTON	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-529-9XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	WILTON	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-530	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-533	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GUILFORD	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-533 is split into 1,000-number blocks - detail below
203-533-0XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	01/31/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-533-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-533-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	09/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-533-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	GUILFORD	HRFRCTASDS0	12/12/2011	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-533-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	GUILFORD	SMFRCTPU4MD	03/21/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-533-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	GUILFORD	NOCLLIKNOWN	11/22/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-533-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	SMFRCTATXMD	12/01/2009	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-533-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	GUILFORD	NOCLLIKNOWN	12/05/2012	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-533-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	GUILFORD	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-533-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-534	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534 is split into 1,000-number blocks - detail below
203-534-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	08/30/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-534-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-534-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	08/30/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-534-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	08/30/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-535	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-535 is split into 1,000-number blocks - detail below
203-535-0XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-535-1XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	03/31/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-535-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	06/07/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-535-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	03/11/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-535-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/04/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-535-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/04/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-535-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	03/11/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-535-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	03/11/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-535-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	03/11/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-535-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/04/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-536	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-537	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537 is split into 1,000-number blocks - detail below
203-537-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-537-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-537-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-538	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-538 is split into 1,000-number blocks - detail below
203-538-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-538-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-538-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-538-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-538-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-538-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	HUNTINGTON	NOCLLIKNOWN	03/08/2012	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-538-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	NOCLLIKNOWN	02/23/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-538-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	HUNTINGTON	NOCLLIKNOWN	04/16/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-538-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	07/25/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-538-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	HUNTINGTON	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-539	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-539 is split into 1,000-number blocks - detail below
203-539-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-539-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-539-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/14/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-539-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-539-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-539-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-539-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	NOCLLIKNOWN	11/22/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-539-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-539-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-539-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	04/05/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-540	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	01/31/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-540 is split into 1,000-number blocks - detail below
203-540-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/21/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-540-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/21/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-540-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/22/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-540-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	02/09/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-540-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	02/09/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-540-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/16/2006	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-540-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/21/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-540-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	09/09/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-540-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	09/09/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-540-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	02/22/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-541	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-541 is split into 1,000-number blocks - detail below
203-541-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-541-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/11/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-541-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-541-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-541-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	04/17/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-541-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	03/18/2009	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-541-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-541-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-541-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-541-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-543	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-544	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GEORGETOWN	NWHNCT02GT0	00/00/0000	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-544 is split into 1,000-number blocks - detail below
203-544-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GEORGETOWN	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-544-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GEORGETOWN	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-544-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GEORGETOWN	NOCLLIKNOWN	09/23/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-544-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	GEORGETOWN	NOCLLIKNOWN	11/11/2014	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-544-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GEORGETOWN	NOCLLIKNOWN	08/08/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-544-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GEORGETOWN	NWHNCT02GT0	06/23/2011	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-544-6XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	GEORGETOWN	NOCLLIKNOWN	06/06/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-544-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GEORGETOWN	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-544-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GEORGETOWN	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-544-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GEORGETOWN	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-545	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545 is split into 1,000-number blocks - detail below
203-545-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-545-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-546	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-546 is split into 1,000-number blocks - detail below
203-546-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	07/14/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-546-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-546-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-546-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-546-4XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-546-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-546-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-546-7XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	DANBURY	NOCLLIKNOWN	06/18/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-546-8XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	DANBURY	NOCLLIKNOWN	12/21/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-546-9XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	DANBURY	NOCLLIKNOWN	03/13/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-547	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	STAMFORD	HRFRCTBCDS1	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTBCDS1))
203-548	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTPU4MD	05/30/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-548 is split into 1,000-number blocks - detail below
203-548-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	05/27/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-548-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	04/04/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	04/30/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	04/04/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	07/21/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	07/21/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	05/06/2009	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-548-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	STAMFORD	SMFRCTPU4MD	06/05/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-549	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-549 is split into 1,000-number blocks - detail below
203-549-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-549-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-549-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-549-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-549-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	12/19/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-549-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	12/19/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-549-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-549-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	11/30/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-549-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/25/2005	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-549-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	03/25/2005	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-550	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-551	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-551 is split into 1,000-number blocks - detail below
203-551-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	08/31/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-551-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	08/24/2006	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-551-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-551-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-551-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/10/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-551-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-551-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-551-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-551-8XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-551-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	NOCLLIKNOWN	06/02/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-553	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553 is split into 1,000-number blocks - detail below
203-553-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	08/27/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-553-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-553-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NEW HAVEN	NOCLLIKNOWN	07/27/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-554	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-556	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-557	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WESTPORT	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-557 is split into 1,000-number blocks - detail below
203-557-0XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WESTPORT	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-557-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WESTPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-557-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WESTPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-557-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WESTPORT	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-557-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WESTPORT	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-557-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WESTPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-557-6XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WESTPORT	NOCLLIKNOWN	06/26/2015	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-557-7XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WESTPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-557-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WESTPORT	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-557-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	WESTPORT	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-558	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-559	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DARIEN	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-559 is split into 1,000-number blocks - detail below
203-559-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	01/09/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	01/09/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	03/30/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DARIEN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-559-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	08/25/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	08/25/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	05/02/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	05/02/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	11/25/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-559-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	11/25/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-560	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-561	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-562	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-563	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563 is split into 1,000-number blocks - detail below
203-563-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	08/10/2007	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-563-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WILTON	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-563-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-564	CT	AT&T - LOCAL (AT&T)		N/A	7421	STAMFORD	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-564 is split into 1,000-number blocks - detail below
203-564-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	12/22/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-564-1XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	STAMFORD	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-564-2XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	STAMFORD	NOCLLIKNOWN	07/06/2023	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-564-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	03/22/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-564-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/07/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-564-5XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	STAMFORD	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-564-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	07/12/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-564-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/07/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-564-8XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	STAMFORD	NWHNCT02X5X	05/18/2009	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-564-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	07/21/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-565	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565 is split into 1,000-number blocks - detail below
203-565-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/07/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-565-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-566	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/04/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566 is split into 1,000-number blocks - detail below
203-566-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-566-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-567	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567 is split into 1,000-number blocks - detail below
203-567-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	NOCLLIKNOWN	08/12/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-567-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-567-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568 is split into 1,000-number blocks - detail below
203-568-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	01/23/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-568-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	03/25/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-568-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	09/10/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-568-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-568-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-569	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569 is split into 1,000-number blocks - detail below
203-569-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-569-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-569-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-569-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-570	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	03/26/2001	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-571	CT	AT&T - LOCAL (AT&T)		N/A	7421	WESTPORT	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-571 is split into 1,000-number blocks - detail below
203-571-0XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	WESTPORT	NOCLLIKNOWN	09/22/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-571-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	04/27/2001	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-571-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	01/07/2016	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-571-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	04/02/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-571-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	04/02/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-571-5XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	WESTPORT	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-571-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	04/28/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-571-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WESTPORT	NOCLLIKNOWN	11/03/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-571-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WESTPORT	NOCLLIKNOWN	11/21/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-571-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	01/07/2016	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-572	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	07/13/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-572 is split into 1,000-number blocks - detail below
203-572-0XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	11/21/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-572-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-572-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	12/05/2007	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-572-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	12/05/2007	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-572-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	12/05/2007	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-572-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-572-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	06/17/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-572-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	07/16/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-572-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	07/16/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-572-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	02/17/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-573	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-574	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-575	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-576	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-577	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-577 is split into 1,000-number blocks - detail below
203-577-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-577-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-577-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-577-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-577-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-577-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	01/10/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-577-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-577-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-577-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-577-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-578	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-578 is split into 1,000-number blocks - detail below
203-578-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-578-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-578-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-578-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-578-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-578-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-578-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	01/08/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-578-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	01/08/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-578-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-578-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-579	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-581	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-581 is split into 1,000-number blocks - detail below
203-581-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-581-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-581-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-581-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-581-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-581-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-581-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-581-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-581-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-581-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-582	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	HMDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Hamden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: HMDNCT00DS0 🔧 Explore Switch(CLLI: HMDNCT00DS0))
203-583	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-583 is split into 1,000-number blocks - detail below
203-583-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	02/12/2004	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-583-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	02/12/2004	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-583-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	02/12/2004	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-583-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTPU4MD	02/02/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-583-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-583-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	12/20/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-583-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	01/25/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-583-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	01/25/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-583-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTPU4MD	08/24/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-583-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	01/25/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-584	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/09/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-584 is split into 1,000-number blocks - detail below
203-584-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/09/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-584-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	08/10/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-584-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	09/02/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-584-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	10/13/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-584-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	10/14/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-584-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	10/14/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-584-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	10/14/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-584-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	11/05/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-584-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	11/05/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-584-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	11/17/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-585	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-585 is split into 1,000-number blocks - detail below
203-585-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-585-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-585-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-585-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	07/06/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-585-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	03/17/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-585-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-585-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-585-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	09/02/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-585-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/14/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-585-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/08/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-586	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WOODBURY	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-586 is split into 1,000-number blocks - detail below
203-586-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOODBURY	NOCLLIKNOWN	09/03/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-586-1XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	WOODBURY	WLMNCT132MD	04/26/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WLMNCT132MD))
203-586-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WOODBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-586-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WOODBURY	NOCLLIKNOWN	12/02/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-586-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOODBURY	NOCLLIKNOWN	05/18/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-586-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOODBURY	HRFRCT03GT0	06/23/2011	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
203-586-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WOODBURY	NOCLLIKNOWN	03/08/2010	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-586-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WOODBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-586-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WOODBURY	NOCLLIKNOWN	09/21/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-586-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WOODBURY	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	GEORGETOWN	NRWLCT02SMD	00/00/0000	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-587 is split into 1,000-number blocks - detail below
203-587-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	GEORGETOWN	NOCLLIKNOWN	02/19/2010	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	GEORGETOWN	NRWLCT02SMD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-587-2XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	GEORGETOWN	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-3XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GEORGETOWN	NOCLLIKNOWN	09/22/2022	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-4XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	GEORGETOWN	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-5XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	GEORGETOWN	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-6XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	GEORGETOWN	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GEORGETOWN	NOCLLIKNOWN	05/16/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	GEORGETOWN	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-587-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	GEORGETOWN	NRWLCT02SMD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-588	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588 is split into 1,000-number blocks - detail below
203-588-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-7XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-588-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-589	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589 is split into 1,000-number blocks - detail below
203-589-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	09/05/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-589-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-589-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-590	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTPU4MD	03/18/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-590 is split into 1,000-number blocks - detail below
203-590-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	12/07/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-590-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	TRUMBULL	NOCLLIKNOWN	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-590-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	TRUMBULL	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-590-3XXX	CT	CHARTER IP ENABLED SERVICES, LLC		N/A	792K	TRUMBULL	WLMNCT132MD	03/01/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WLMNCT132MD))
203-590-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTPU4MD	11/02/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-590-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	TRUMBULL	NOCLLIKNOWN	10/01/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-590-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTPU4MD	02/08/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-590-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	TRUMBULL	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-590-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	TRUMBULL	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-590-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	TRUMBULL	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-591	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-592	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-593	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	NORWALK	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-594	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW CANAAN	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-594 is split into 1,000-number blocks - detail below
203-594-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW CANAAN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-594-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NEW CANAAN	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-594-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW CANAAN	NWHNCT02GT0	08/10/2007	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-594-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW CANAAN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-594-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW CANAAN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-594-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NEW CANAAN	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-594-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW CANAAN	NOCLLIKNOWN	09/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-594-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NEW CANAAN	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-594-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW CANAAN	NOCLLIKNOWN	04/04/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-594-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NEW CANAAN	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-595	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-595 is split into 1,000-number blocks - detail below
203-595-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-595-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	05/25/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-595-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	05/07/2009	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-595-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCT0162Z	08/10/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCT0162Z))
203-595-4XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	07/23/2009	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-595-5XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	03/24/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-595-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-595-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-595-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-595-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-596	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597 is split into 1,000-number blocks - detail below
203-597-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-597-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-597-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-598	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-598 is split into 1,000-number blocks - detail below
203-598-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-598-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-598-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-598-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-598-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-598-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-598-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	01/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-598-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-598-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	06/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-598-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-599	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MERIDEN	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-599 is split into 1,000-number blocks - detail below
203-599-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MERIDEN	SMFRCTPU4MD	01/05/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-599-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MERIDEN	SMFRCTPU4MD	01/13/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-599-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	04/05/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-599-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MERIDEN	SMFRCTPU4MD	06/26/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-599-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MERIDEN	SMFRCTPU4MD	12/13/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-599-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	01/06/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-599-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	04/17/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-599-7XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	MERIDEN	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-599-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	HRFRCT03GT0	06/08/2006	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
203-599-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MERIDEN	NOCLLIKNOWN	09/22/2022	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-600	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600 is split into 1,000-number blocks - detail below
203-600-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	08/16/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	08/16/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-600-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	08/17/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-600-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	08/17/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-601	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	TRUMBULL	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-601 is split into 1,000-number blocks - detail below
203-601-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	07/16/2019	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-601-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	TRUMBULL	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-601-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	TRUMBULL	NOCLLIKNOWN	07/13/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-601-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	TRUMBULL	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-601-4XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	TRUMBULL	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-601-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	TRUMBULL	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-601-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	TRUMBULL	NOCLLIKNOWN	12/18/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-601-7XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	TRUMBULL	NOCLLIKNOWN	04/24/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-601-8XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	TRUMBULL	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-601-9XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	TRUMBULL	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-602	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602 is split into 1,000-number blocks - detail below
203-602-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/11/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-602-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-602-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-603	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-604	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTPU4MD	03/14/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-604 is split into 1,000-number blocks - detail below
203-604-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTPU4MD	02/14/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-604-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	11/12/2003	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-604-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTPU4MD	08/16/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-604-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	04/17/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-604-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	06/04/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-604-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	01/05/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-604-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTPU4MD	10/05/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-604-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/08/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-604-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTPU4MD	06/14/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-604-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTPU4MD	05/10/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-605	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-606	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	NRTNMAAACM6	00/00/0000	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRTNMAAACM6))
203-607	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/04/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607 is split into 1,000-number blocks - detail below
203-607-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-607-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	02/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-608	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608 is split into 1,000-number blocks - detail below
203-608-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	10/29/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-608-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-608-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MERIDEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-609	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-609 is split into 1,000-number blocks - detail below
203-609-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-609-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-609-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-609-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	06/07/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-609-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	06/07/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-609-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	06/07/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-609-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-609-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-609-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-609-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	NWHNCTGODS0	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-610 is split into 1,000-number blocks - detail below
203-610-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	04/14/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	04/14/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	04/14/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	05/02/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	07/09/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	08/08/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	NWHNCTGODS0	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-610-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	08/08/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-610-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	NWHNCTGODS0	02/03/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-610-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-612	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-612 is split into 1,000-number blocks - detail below
203-612-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	05/13/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-612-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	02/28/2005	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-612-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-612-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-612-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	12/28/2005	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-612-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTQI9MD	07/05/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-612-6XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	10/11/2004	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-612-7XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	10/11/2004	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-612-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	10/11/2004	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-612-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-613	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613 is split into 1,000-number blocks - detail below
203-613-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	04/17/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-613-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-613-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-614	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-614 is split into 1,000-number blocks - detail below
203-614-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	10/19/2009	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-614-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	09/14/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-614-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-614-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-614-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-614-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-614-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-614-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-614-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	07/27/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-614-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-615	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-615 is split into 1,000-number blocks - detail below
203-615-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-615-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-615-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-615-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-615-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-615-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-615-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-615-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-615-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	05/13/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-615-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	N/A	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-616	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-616 is split into 1,000-number blocks - detail below
203-616-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	10/05/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-616-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-616-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-616-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-616-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-616-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DANBURY	NOCLLIKNOWN	07/25/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-616-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-616-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-616-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	07/06/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-616-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	DANBURY	NOCLLIKNOWN	06/30/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-617	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	BLFDCTAP2MD	09/05/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-617 is split into 1,000-number blocks - detail below
203-617-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	11/19/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-617-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	04/20/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-617-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	NOCLLIKNOWN	07/14/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-617-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	NOCLLIKNOWN	12/05/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-617-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	08/28/2008	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-617-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	BLFDCTAP2MD	09/04/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-617-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	DANBURY	NOCLLIKNOWN	12/05/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-617-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	BLFDCTAP2MD	09/04/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-617-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	04/20/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-617-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	BLFDCTAP2MD	09/06/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-619	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-619 is split into 1,000-number blocks - detail below
203-619-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-619-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	01/28/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-619-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	01/28/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-619-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	01/28/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-619-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	01/28/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-619-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-619-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-619-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-619-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-619-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-620	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	07/19/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620 is split into 1,000-number blocks - detail below
203-620-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	07/29/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	07/29/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-620-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	07/29/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-621	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621 is split into 1,000-number blocks - detail below
203-621-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	02/23/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-621-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-621-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DARIEN	BLFDCTAP2MD	01/20/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-621-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-623	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-624	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-626	CT	AT&T - LOCAL (AT&T)		N/A	7421	WALLINGFD	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-626 is split into 1,000-number blocks - detail below
203-626-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	05/14/2001	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-626-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-626-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-626-3XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	WALLINGFD	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-626-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	09/19/2018	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-626-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WALLINGFD	NOCLLIKNOWN	11/22/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-626-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	03/09/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-626-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	04/30/2008	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-626-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	01/15/2008	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-626-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WALLINGFD	NOCLLIKNOWN	09/03/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-627	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627 is split into 1,000-number blocks - detail below
203-627-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-627-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-628	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	DANBURY	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-628 is split into 1,000-number blocks - detail below
203-628-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	02/28/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-628-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	08/10/2021	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-628-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	08/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-628-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	DANBURY	NWHNCT02X5X	09/27/2013	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-628-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	06/26/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-628-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	01/17/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-628-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	04/05/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-628-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DANBURY	NOCLLIKNOWN	02/20/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-628-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	11/01/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-628-9XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	DANBURY	NRWLCT02YMD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-630	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-631	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-632	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-632 is split into 1,000-number blocks - detail below
203-632-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-632-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-632-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-632-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-632-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-632-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NAUGATUCK	NOCLLIKNOWN	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-632-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NAUGATUCK	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-632-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NAUGATUCK	NOCLLIKNOWN	07/12/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-632-8XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NAUGATUCK	NOCLLIKNOWN	02/26/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-632-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NAUGATUCK	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-633	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOLCOTT	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-633 is split into 1,000-number blocks - detail below
203-633-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOLCOTT	SMFRCTPU4MD	01/10/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-633-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOLCOTT	SMFRCTPU4MD	01/20/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-633-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOLCOTT	NOCLLIKNOWN	10/01/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-633-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WOLCOTT	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-633-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOLCOTT	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-633-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WOLCOTT	HRFRCT03GT0	04/14/2011	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
203-633-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WOLCOTT	NOCLLIKNOWN	11/01/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-633-7XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WOLCOTT	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-633-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WOLCOTT	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-633-9XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	WOLCOTT	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-634	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-635	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-635 is split into 1,000-number blocks - detail below
203-635-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	SMFRCTPU4MD	12/20/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-635-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	05/12/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-635-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	10/27/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-635-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	08/17/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-635-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-635-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	SMFRCTPU4MD	08/02/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-635-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WESTPORT	SMFRCTPU4MD	02/08/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-635-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WESTPORT	NOCLLIKNOWN	10/27/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-635-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WESTPORT	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-635-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WESTPORT	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-636	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/14/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636 is split into 1,000-number blocks - detail below
203-636-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DARIEN	NOCLLIKNOWN	10/15/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-636-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/16/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-636-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	09/16/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-637	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-638	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638 is split into 1,000-number blocks - detail below
203-638-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	02/19/2010	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-638-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-638-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	04/25/2022	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-638-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	TRUMBULL	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-639	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-640	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-641	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-642	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-642 is split into 1,000-number blocks - detail below
203-642-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-642-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-642-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-642-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NORWALK	NRWLCT02SMD	11/01/2006	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-642-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NORWALK	NRWLCT02SMD	07/10/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-642-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-642-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	11/05/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-642-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-642-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	12/10/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-642-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	12/10/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-643	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643 is split into 1,000-number blocks - detail below
203-643-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	BRANFORD	HRFRCTASDS0	05/29/2003	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-643-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	12/03/2013	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	03/14/2011	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-643-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRANFORD	NOCLLIKNOWN	02/12/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-643-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRANFORD	SMFRCTATXMD	12/05/2008	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-644	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644 is split into 1,000-number blocks - detail below
203-644-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	05/11/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-644-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	07/07/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	12/08/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	01/13/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	05/09/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	06/07/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-644-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-645	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-646	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	BRANFORD	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-646 is split into 1,000-number blocks - detail below
203-646-0XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	BRANFORD	NOCLLIKNOWN	02/10/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-646-1XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	BRANFORD	SMFRCTQI9MD	04/06/2023	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-646-2XXX	CT	TWILIO INTERNATIONAL, INC.	0028844892	RMD0035906	506J	BRANFORD	NOCLLIKNOWN	03/02/2021	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-646-3XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	BRANFORD	SMFRCTQI9MD	10/23/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-646-4XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	BRANFORD	SMFRCTQI9MD	10/23/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-646-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	BRANFORD	SMFRCTQI9MD	02/02/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-646-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	05/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-646-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRANFORD	NOCLLIKNOWN	03/17/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-646-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRANFORD	NOCLLIKNOWN	05/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-646-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	BRANFORD	NOCLLIKNOWN	03/10/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-647	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	NWHNCT02W01	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02W01))
203-648	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-648 is split into 1,000-number blocks - detail below
203-648-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	06/27/2003	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	06/27/2003	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	09/18/2003	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	09/18/2003	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-648-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	10/08/2003	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	01/27/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	01/27/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	07/02/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-648-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	SMFRCTPU4MD	10/12/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-649	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649 is split into 1,000-number blocks - detail below
203-649-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-649-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	09/29/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-649-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-650	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	03/26/2001	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650 is split into 1,000-number blocks - detail below
203-650-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-650-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-651	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-651 is split into 1,000-number blocks - detail below
203-651-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-651-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-651-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-651-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-651-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-651-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	CHESHIRE	NOCLLIKNOWN	09/30/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-651-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	CHESHIRE	HRFRCTASDS0	02/15/2006	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-651-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	CHESHIRE	NOCLLIKNOWN	11/15/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-651-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	09/15/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-651-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	CHESHIRE	NOCLLIKNOWN	11/21/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-652	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652 is split into 1,000-number blocks - detail below
203-652-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-652-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW CANAAN	NOCLLIKNOWN	12/08/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-652-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653 is split into 1,000-number blocks - detail below
203-653-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-653-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-653-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-654	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NHVNCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: North Haven Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: NHVNCT00RS0 🔧 Explore Switch(CLLI: NHVNCT00RS0))
203-654 is split into 1,000-number blocks - detail below
203-654-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	02/16/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-654-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	03/11/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-654-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	11/19/2007	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-654-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	12/10/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-654-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NHVNCT00RS0	N/A	Prefix Type: ICO Switch Name: North Haven Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: NHVNCT00RS0 🔧 Explore Switch(CLLI: NHVNCT00RS0))
203-654-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/08/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-654-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	02/23/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-654-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	08/24/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-654-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NHVNCT00RS0	N/A	Prefix Type: ICO Switch Name: North Haven Switch Type: Siemens EWSD RSU-DE5 LATA: Connecticut (920) Tandem: NHVNCT00RS0 🔧 Explore Switch(CLLI: NHVNCT00RS0))
203-654-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	03/03/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-655	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DARIEN	DARNCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: DARIEN Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: DARNCT00RS1))
203-656	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DARIEN	DARNCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: DARIEN Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: DARNCT00RS1))
203-657	CT	AMERICAN MESSAGING SERVICES, LLC		N/A	9748	NEW HAVEN	HRFRCT0379Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-658	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	STAMFORD	SMFRCTCTDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-658 is split into 1,000-number blocks - detail below
203-658-0XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	STAMFORD	SMFRCTCTDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-658-1XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	STAMFORD	SMFRCTCTDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-658-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	09/21/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-658-3XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	STAMFORD	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-658-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	09/12/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-658-5XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	STAMFORD	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-658-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	03/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-658-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	07/12/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-658-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	07/19/2012	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-658-9XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	STAMFORD	SMFRCTCTDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTCTDS0))
203-659	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659 is split into 1,000-number blocks - detail below
203-659-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-659-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	FAIRFIELD	NOCLLIKNOWN	05/24/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-659-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	FAIRFIELD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-662	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DARIEN	DARNCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: DARIEN Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: DARNCT00RS1))
203-663	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663 is split into 1,000-number blocks - detail below
203-663-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	09/14/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-663-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-663-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-664	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	REDDING	NRWLCT02XMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02XMD))
203-664 is split into 1,000-number blocks - detail below
203-664-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	REDDING	NOCLLIKNOWN	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-664-2XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	REDDING	NOCLLIKNOWN	07/21/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-664-3XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	REDDING	NOCLLIKNOWN	07/21/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-664-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	REDDING	NOCLLIKNOWN	05/10/2013	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-664-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	REDDING	NOCLLIKNOWN	04/29/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-664-6XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	REDDING	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-664-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	REDDING	NOCLLIKNOWN	06/06/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-664-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	REDDING	NOCLLIKNOWN	06/17/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-665	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665 is split into 1,000-number blocks - detail below
203-665-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	06/15/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-665-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WILTON	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-665-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WILTON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-666	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTPU4MD	09/26/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-666 is split into 1,000-number blocks - detail below
203-666-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	11/11/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-666-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	11/11/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-666-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	08/12/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-666-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	NOCLLIKNOWN	10/30/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-666-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	BRIDGEPORT	SMFRCTPU4MD	09/27/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-666-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	08/12/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-666-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-666-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-666-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	08/12/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-666-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-667	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667 is split into 1,000-number blocks - detail below
203-667-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-667-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	STAMFORD	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668 is split into 1,000-number blocks - detail below
203-668-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-668-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-669	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DARIEN	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-669 is split into 1,000-number blocks - detail below
203-669-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	12/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-669-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	02/19/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-669-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DARIEN	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-669-3XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	DARIEN	NOCLLIKNOWN	02/10/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-669-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	02/06/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-669-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DARIEN	SMFRCTATXMD	06/12/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-669-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	08/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-669-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	08/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-669-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	DARIEN	SMFRCTDSDS0	08/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-669-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	DARIEN	NOCLLIKNOWN	03/11/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	FAIRFIELD	BLFDCTAP2MD	12/06/2021	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-670 is split into 1,000-number blocks - detail below
203-670-0XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	FAIRFIELD	NOCLLIKNOWN	07/20/2023	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-1XXX	CT	IP HORIZON LLC	0027469766	RMD0001571	515J	FAIRFIELD	NOCLLIKNOWN	06/28/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-2XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	FAIRFIELD	NOCLLIKNOWN	09/08/2022	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-3XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	FAIRFIELD	NOCLLIKNOWN	04/29/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-4XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	FAIRFIELD	NOCLLIKNOWN	04/29/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-5XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	FAIRFIELD	NOCLLIKNOWN	04/29/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-6XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	FAIRFIELD	NOCLLIKNOWN	01/20/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-7XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	FAIRFIELD	NOCLLIKNOWN	01/20/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-8XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	FAIRFIELD	NOCLLIKNOWN	01/20/2022	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-670-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	FAIRFIELD	BLFDCTAP2MD	12/06/2021	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-671	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-672	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-673	CT	AT&T - LOCAL (AT&T)		N/A	7421	BRIDGEPORT	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-673 is split into 1,000-number blocks - detail below
203-673-0XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	BRIDGEPORT	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-673-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	02/09/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	06/27/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/25/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/18/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	12/05/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	05/26/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/08/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	02/10/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-673-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	05/13/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-674	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674 is split into 1,000-number blocks - detail below
203-674-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-674-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-674-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	11/02/2010	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-674-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	08/23/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-675	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675 is split into 1,000-number blocks - detail below
203-675-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-675-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676 is split into 1,000-number blocks - detail below
203-676-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-676-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-677	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677 is split into 1,000-number blocks - detail below
203-677-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	03/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-677-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-677-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	05/26/2011	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	05/26/2011	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-677-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	05/26/2011	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-678	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678 is split into 1,000-number blocks - detail below
203-678-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WALLINGFD	NOCLLIKNOWN	11/02/2012	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-678-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-678-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WALLINGFD	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-678-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	06/20/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-679	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679 is split into 1,000-number blocks - detail below
203-679-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	04/25/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-679-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	06/22/2006	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-679-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	03/20/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-680	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	10/31/2012	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-680 is split into 1,000-number blocks - detail below
203-680-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	12/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-680-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	11/01/2012	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-680-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	11/01/2012	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-680-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	12/19/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-680-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	11/01/2012	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-680-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	11/01/2012	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-680-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	11/01/2012	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-680-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	11/01/2012	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-680-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	12/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-680-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-682	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682 is split into 1,000-number blocks - detail below
203-682-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WESTPORT	NWHNCT02GT0	06/22/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-682-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WESTPORT	MDTWCTNIBMD	08/04/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-682-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-682-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WESTPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683 is split into 1,000-number blocks - detail below
203-683-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-683-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	05/13/2005	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-683-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-684	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-684 is split into 1,000-number blocks - detail below
203-684-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	08/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	08/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	08/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-3XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	NEW HAVEN	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-684-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	01/18/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	08/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	08/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-8XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	NEW HAVEN	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-684-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW HAVEN	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-685	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/30/2001	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-686	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Meriden Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS1 🔧 Explore Switch(CLLI: MRDNCT00DS1))
203-687	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-687 is split into 1,000-number blocks - detail below
203-687-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/27/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-687-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/27/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-687-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/27/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-687-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	12/05/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-687-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	SMFRCTPU4MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-687-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	09/08/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-687-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/09/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-687-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	05/02/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-687-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/09/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-687-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	08/08/2003	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-688	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-689	CT	AT&T - LOCAL (AT&T)		N/A	7421	GUILFORD	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-689 is split into 1,000-number blocks - detail below
203-689-0XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	GUILFORD	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-689-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	01/04/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-689-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-689-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-689-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	GUILFORD	GUFDCT00DS0	07/14/2008	Prefix Type: ICO Switch Name: Guilford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: GUFDCT00DS0 🔧 Explore Switch(CLLI: GUFDCT00DS0))
203-689-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	GUILFORD	NOCLLIKNOWN	07/24/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-689-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	06/02/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-689-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	06/02/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-689-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	GUILFORD	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-689-9XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	GUILFORD	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-690	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/21/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-690 is split into 1,000-number blocks - detail below
203-690-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/10/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-690-1XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	BRIDGEPORT	NOCLLIKNOWN	09/28/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-690-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	03/03/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-690-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	BRIDGEPORT	NOCLLIKNOWN	09/05/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-690-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	09/10/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-690-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	03/24/2011	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-690-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	05/27/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-690-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	05/27/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-690-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/26/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-690-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	03/26/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-691	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-691 is split into 1,000-number blocks - detail below
203-691-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	01/11/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-691-1XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	01/11/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-691-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-691-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-691-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	12/29/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-691-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	01/11/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-691-6XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	01/11/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-691-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	01/11/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-691-8XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	01/11/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-691-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	01/11/2007	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-692	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-692 is split into 1,000-number blocks - detail below
203-692-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	11/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-692-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	11/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-692-2XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	FAIRFIELD	NOCLLIKNOWN	06/30/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-692-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-692-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	SMFRCTQI9MD	12/20/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-692-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	FAIRFIELD	BLFDCTAP2MD	04/07/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-692-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	08/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-692-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	08/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-692-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	08/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-692-9XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	FAIRFIELD	NOCLLIKNOWN	02/10/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	MILFORD	NRWLCT02XMD	07/13/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02XMD))
203-693 is split into 1,000-number blocks - detail below
203-693-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MILFORD	NOCLLIKNOWN	03/25/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MILFORD	NOCLLIKNOWN	11/29/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693-2XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	05/10/2013	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693-3XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	05/26/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693-4XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MILFORD	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	NWHNCT02GT0	06/17/2014	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-693-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	MILFORD	NRWLCT02XMD	07/14/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02XMD))
203-693-7XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	MILFORD	NOCLLIKNOWN	03/13/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	MILFORD	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-693-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	MILFORD	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-694	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Meridan Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS0 🔧 Explore Switch(CLLI: MRDNCT00DS0))
203-694 is split into 1,000-number blocks - detail below
203-694-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MERIDEN	NOCLLIKNOWN	11/25/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-694-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	07/11/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-694-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	11/21/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-694-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MERIDEN	NOCLLIKNOWN	11/07/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-694-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	MERIDEN	MDTWCTNIBMD	04/17/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-694-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Meridan Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS0 🔧 Explore Switch(CLLI: MRDNCT00DS0))
203-694-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Meridan Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS0 🔧 Explore Switch(CLLI: MRDNCT00DS0))
203-694-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Meridan Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS0 🔧 Explore Switch(CLLI: MRDNCT00DS0))
203-694-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MERIDEN	MRDNCT00DS0	N/A	Prefix Type: ICO Switch Name: Meridan Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: MRDNCT00DS0 🔧 Explore Switch(CLLI: MRDNCT00DS0))
203-694-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MERIDEN	BLFDCTAP2MD	07/06/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-695	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-695 is split into 1,000-number blocks - detail below
203-695-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	MDLBCT00RS0	N/A	Prefix Type: ICO Switch Name: Middlebury Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: MDLBCT00RS0 🔧 Explore Switch(CLLI: MDLBCT00RS0))
203-695-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-695-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-695-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-695-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	12/08/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-695-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	07/06/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-695-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	01/03/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-695-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	04/07/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-695-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	01/15/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-695-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	01/03/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-696	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	BRIDGEPORT	BRPTCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Bridgeport Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: BRPTCT01DS0 🔧 Explore Switch(CLLI: BRPTCT01DS0))
203-697	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697 is split into 1,000-number blocks - detail below
203-697-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	08/18/2011	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	08/18/2011	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-697-8XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WALLINGFD	NOCLLIKNOWN	04/23/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-697-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-698	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698 is split into 1,000-number blocks - detail below
203-698-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	OLDGRNWICH	NOCLLIKNOWN	07/02/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-698-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	OLDGRNWICH	NOCLLIKNOWN	11/20/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-698-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-698-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	OLDGRNWICH	OGNWCT00RS1	N/A	Prefix Type: ICO Switch Name: OLD GREENWICH Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: OGNWCT00RS1))
203-699	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	00/00/0000	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699 is split into 1,000-number blocks - detail below
203-699-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-699-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-699-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	CHESHIRE	CHSHCT01DS0	N/A	Prefix Type: ICO Switch Name: Cheshire Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: CHSHCT01DS0 🔧 Explore Switch(CLLI: CHSHCT01DS0))
203-701	CT	AT&T - LOCAL (AT&T)		N/A	7421	MILFORD	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-701 is split into 1,000-number blocks - detail below
203-701-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	04/27/2001	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-701-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	11/20/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-701-3XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	MILFORD	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-701-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	MILFORD	HRFRCTASDS0	07/22/2009	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-701-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	MILFORD	NOCLLIKNOWN	04/14/2009	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-701-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MILFORD	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-701-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MILFORD	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-701-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MILFORD	NOCLLIKNOWN	10/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-701-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	MILFORD	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-702	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702 is split into 1,000-number blocks - detail below
203-702-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	01/05/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-702-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-702-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-703	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-703 is split into 1,000-number blocks - detail below
203-703-0XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	10/05/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-703-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/06/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-703-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/06/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-703-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-703-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-703-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT02DS0	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: SMFRCT02DS0 🔧 Explore Switch(CLLI: SMFRCT02DS0))
203-703-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	STAMFORD	NOCLLIKNOWN	04/17/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-703-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	STAMFORD	NOCLLIKNOWN	04/17/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-703-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	06/07/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-703-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	STAMFORD	NOCLLIKNOWN	01/09/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOLCOTT	SMFRCTPU4MD	07/17/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-704 is split into 1,000-number blocks - detail below
203-704-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WOLCOTT	NOCLLIKNOWN	11/27/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WOLCOTT	NOCLLIKNOWN	11/27/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704-2XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	WOLCOTT	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	WOLCOTT	HRFRCTASDS0	07/02/2013	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-704-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WOLCOTT	SMFRCTATXMD	07/16/2014	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-704-5XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	WOLCOTT	NOCLLIKNOWN	06/06/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WOLCOTT	NOCLLIKNOWN	02/07/2011	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WOLCOTT	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704-8XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	WOLCOTT	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-704-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WOLCOTT	SMFRCTPU4MD	07/29/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-705	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-705 is split into 1,000-number blocks - detail below
203-705-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-705-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/06/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-705-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-705-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-705-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-705-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-705-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	N/A	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-705-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/06/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-705-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	05/23/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-705-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	05/23/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-706	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	WTRBCT001MD	02/12/2004	Prefix Type: IPES Switch Name: WATERBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WTRBCT001MD))
203-706 is split into 1,000-number blocks - detail below
203-706-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	04/16/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-706-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	WTRBCT001MD	02/17/2004	Prefix Type: IPES Switch Name: WATERBURY Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: WTRBCT001MD))
203-706-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	08/19/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-706-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	03/21/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-706-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	12/12/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-706-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	02/07/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-706-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	05/08/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-706-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	07/25/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-706-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	10/15/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-706-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	12/08/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-707	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	03/10/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-707 is split into 1,000-number blocks - detail below
203-707-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	03/10/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-707-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	05/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-707-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	05/04/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-707-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	05/09/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-707-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	06/08/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-707-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	SMFRCTATXMD	05/23/2011	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-707-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	06/08/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-707-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	06/08/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-707-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	05/21/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-707-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	05/21/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-708	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	00/00/0000	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708 is split into 1,000-number blocks - detail below
203-708-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/07/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-708-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	08/07/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-708-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-708-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	N/A	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-709	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709 is split into 1,000-number blocks - detail below
203-709-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	12/05/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-709-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	12/05/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-709-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-709-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-710	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-712	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-712 is split into 1,000-number blocks - detail below
203-712-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	SMFRCTQI9MD	04/14/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-712-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HUNTINGTON	HRFRCT0370Z	05/11/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-712-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-712-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-712-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-712-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-712-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	HUNTINGTON	HRFRCTASDS0	01/20/2006	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-712-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	HUNTINGTON	NOCLLIKNOWN	12/29/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-712-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	HUNTINGTON	HRFRCTASDS0	03/15/2006	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-712-9XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	HUNTINGTON	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-713	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MILFORD	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-713 is split into 1,000-number blocks - detail below
203-713-0XXX	CT	IP HORIZON LLC	0027469766	RMD0001571	515J	MILFORD	NOCLLIKNOWN	07/11/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-713-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	05/18/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-713-2XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	MILFORD	NOCLLIKNOWN	06/30/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-713-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MILFORD	SMFRCTQI9MD	10/23/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-713-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	NWHNCT02GT0	06/20/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-713-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MILFORD	HRFRCT0307Z	04/02/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0307Z))
203-713-8XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	MILFORD	NOCLLIKNOWN	05/26/2010	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-713-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	MILFORD	SMFRCTQI9MD	05/05/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-714	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NAUGATUCK	SMFRCTQI9MD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-714 is split into 1,000-number blocks - detail below
203-714-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NAUGATUCK	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-714-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	HRFRCT0370Z	03/24/2005	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-714-2XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NAUGATUCK	SMFRCTQI9MD	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-714-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NAUGATUCK	NOCLLIKNOWN	12/16/2025	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-714-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NAUGATUCK	NOCLLIKNOWN	09/29/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-714-5XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NAUGATUCK	SMFRCTQI9MD	09/24/2024	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-714-6XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NAUGATUCK	NOCLLIKNOWN	08/26/2011	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-714-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	HRFRCT03GT0	08/10/2007	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
203-714-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NAUGATUCK	SMFRCTATXMD	07/17/2009	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-714-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	NAUGATUCK	NOCLLIKNOWN	03/11/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-715	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715 is split into 1,000-number blocks - detail below
203-715-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	01/11/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-715-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	MERIDEN	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-716	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW CANAAN	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-716 is split into 1,000-number blocks - detail below
203-716-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	09/10/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-716-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW CANAAN	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-716-3XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NEW CANAAN	NOCLLIKNOWN	10/13/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-716-4XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NEW CANAAN	NOCLLIKNOWN	09/24/2024	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-716-5XXX	CT	ONVOY SPECTRUM, LLC (Sinch)	0024415002	RMD0002045	624H	NEW CANAAN	NOCLLIKNOWN	01/25/2021	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-716-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	08/06/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-716-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	09/10/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-716-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW CANAAN	SMFRCTDSDS0	09/18/2002	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-718	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	CHESHIRE	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-718 is split into 1,000-number blocks - detail below
203-718-0XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	CHESHIRE	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-718-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	05/11/2004	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-718-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	CHESHIRE	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-718-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	10/23/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-718-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	CHESHIRE	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-718-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	10/23/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-718-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	04/13/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-718-7XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	CHESHIRE	NOCLLIKNOWN	08/26/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-718-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-718-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	CHESHIRE	NOCLLIKNOWN	03/11/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-719	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-720	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720 is split into 1,000-number blocks - detail below
203-720-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720-6XXX	CT	TELNYX LLC	0018998724	RMD0001645	073H	NAUGATUCK	NOCLLIKNOWN	04/20/2018	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-720-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-720-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NAUGATUCK	NOCLLIKNOWN	03/14/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-720-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-721	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-721 is split into 1,000-number blocks - detail below
203-721-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	09/04/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-721-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	02/03/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-721-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	07/22/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-721-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	01/03/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-721-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	10/20/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-721-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	10/20/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-721-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	11/26/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-721-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-721-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	WATERBURY	HRFRCTASDS0	05/28/2008	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-721-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WATERBURY	NOCLLIKNOWN	07/26/2022	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-722	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-723	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723 is split into 1,000-number blocks - detail below
203-723-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NAUGATUCK	NOCLLIKNOWN	08/29/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-723-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-723-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	N/A	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-724	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-724 is split into 1,000-number blocks - detail below
203-724-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-724-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-724-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-724-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-724-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-724-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	STAMFORD	HRFRCT0370Z	07/31/2008	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-724-6XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	08/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-724-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	10/04/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-724-8XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NOCLLIKNOWN	08/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-724-9XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	02/20/2013	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-725	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-725 is split into 1,000-number blocks - detail below
203-725-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	04/17/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-725-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	12/01/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-725-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	02/10/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-725-3XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	10/18/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-725-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	07/06/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-725-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	01/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-725-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	01/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-725-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	01/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-725-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	01/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-725-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-726	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	09/08/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-726 is split into 1,000-number blocks - detail below
203-726-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	09/10/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-726-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	02/17/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-726-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	02/17/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-726-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	02/17/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-726-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	02/17/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-726-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	02/17/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-726-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	BRIDGEPORT	BLFDCTAP2MD	02/17/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-726-7XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	BRIDGEPORT	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-726-8XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	BRIDGEPORT	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-726-9XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	BRIDGEPORT	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-727	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	06/05/2001	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-727 is split into 1,000-number blocks - detail below
203-727-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	BRIDGEPORT	SMFRCTDSDS0	08/24/2006	Prefix Type: WIRELESS Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-727-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-727-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-727-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-727-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-727-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-727-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-727-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	07/07/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-727-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	07/07/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-727-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-728	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/22/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728 is split into 1,000-number blocks - detail below
203-728-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	11/28/2006	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-728-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	STAMFORD	SMFRCTDSDS0	11/28/2006	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-728-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-728-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	STAMFORD	SMFRCT01DS2	11/28/2006	Prefix Type: ICO Switch Name: Stamford Switch Type: N/A LATA: Connecticut (920) Tandem: SMFRCT01DS2 🔧 Explore Switch(CLLI: SMFRCT01DS2))
203-729	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NAUGATUCK	NGTCCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Naugatuck Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NGTCCT00DS0 🔧 Explore Switch(CLLI: NGTCCT00DS0))
203-730	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-731	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-731 is split into 1,000-number blocks - detail below
203-731-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	08/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-731-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-731-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-731-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-731-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-731-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-731-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-731-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-731-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-731-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	09/13/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-732	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-733	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-734	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-735	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736 is split into 1,000-number blocks - detail below
203-736-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	11/15/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-736-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-736-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	DRBYCT00DS0	N/A	Prefix Type: ICO Switch Name: Derby Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DRBYCT00DS0 🔧 Explore Switch(CLLI: DRBYCT00DS0))
203-737	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737 is split into 1,000-number blocks - detail below
203-737-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	04/26/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-737-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-737-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-738	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-738 is split into 1,000-number blocks - detail below
203-738-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-738-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-738-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-738-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-738-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-738-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	GUILFORD	NOCLLIKNOWN	03/25/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-738-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	GUILFORD	HRFRCT0370Z	06/11/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-738-7XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	GUILFORD	NOCLLIKNOWN	06/06/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-738-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	GUILFORD	NOCLLIKNOWN	07/06/2010	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-738-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	GUILFORD	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-739	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739 is split into 1,000-number blocks - detail below
203-739-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	10/26/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-739-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-739-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	08/17/2006	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-740	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	BRFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Brookfield Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRFDCT00DS0 🔧 Explore Switch(CLLI: BRFDCT00DS0))
203-741	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741 is split into 1,000-number blocks - detail below
203-741-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WALLINGFD	WLFRCT00DS0	N/A	Prefix Type: ICO Switch Name: Wallingford Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: WLFRCT00DS0 🔧 Explore Switch(CLLI: WLFRCT00DS0))
203-741-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WALLINGFD	NOCLLIKNOWN	05/28/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-741-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WALLINGFD	NOCLLIKNOWN	06/22/2015	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-743	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744 is split into 1,000-number blocks - detail below
203-744-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-744-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-745	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT02GT0	00/00/0000	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-745 is split into 1,000-number blocks - detail below
203-745-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	04/10/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-745-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-745-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	04/10/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-745-3XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	05/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-745-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	05/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-745-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	05/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-745-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	09/05/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-745-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	12/14/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-745-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	12/14/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-745-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	06/25/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-746	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWFLCT00RS1	00/00/0000	Prefix Type: ICO Switch Name: NEW FAIRFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWFLCT00RS1))
203-747	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-747 is split into 1,000-number blocks - detail below
203-747-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	01/22/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-747-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/07/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-747-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	06/23/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-747-3XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-747-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	04/28/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-747-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	04/28/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-747-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	08/19/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-747-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-747-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-747-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	08/29/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-748	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-749	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-750	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT03DS0 🔧 Explore Switch(CLLI: NRWLCT03DS0))
203-751	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	NWHNCT02GT0	00/00/0000	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-751 is split into 1,000-number blocks - detail below
203-751-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	ANSONIDRBY	MDTWCTNIBMD	01/18/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-751-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-751-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-751-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-751-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	02/08/2008	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-751-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	ANSONIDRBY	BLFDCTAPCMO	02/16/2007	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCMO))
203-751-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	NWHNCT02GT0	11/01/2006	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-751-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	ANSONIDRBY	HRFRCTASBMD	01/04/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-751-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	ANSONIDRBY	NWHNCT02GT0	N/A	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-751-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	ANSONIDRBY	NOCLLIKNOWN	11/09/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-752	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-752 is split into 1,000-number blocks - detail below
203-752-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-752-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-752-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-752-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-752-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-752-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-752-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/15/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-752-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/15/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-752-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/15/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-752-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-753	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-754	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-755	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-756	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-757	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-758	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	PRSPCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Prospect Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: PRSPCT00RS0 🔧 Explore Switch(CLLI: PRSPCT00RS0))
203-759	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759 is split into 1,000-number blocks - detail below
203-759-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-759-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-759-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WATERBURY	WTRBCT00DS0	N/A	Prefix Type: ICO Switch Name: Waterbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: WTRBCT00DS0 🔧 Explore Switch(CLLI: WTRBCT00DS0))
203-760	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/16/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760 is split into 1,000-number blocks - detail below
203-760-0XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-1XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-2XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-3XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-4XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-5XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-6XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-7XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-8XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-760-9XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	BRIDGEPORT	HRFRCT0380Z	04/17/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-761	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762 is split into 1,000-number blocks - detail below
203-762-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-6XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	WILTON	NOCLLIKNOWN	05/31/2013	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-762-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-762-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	N/A	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-763	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	SMFRCTPU4MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-763 is split into 1,000-number blocks - detail below
203-763-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	10/02/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-763-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	FAIRFIELD	NOCLLIKNOWN	05/14/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-763-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	10/02/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-763-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	10/02/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-763-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	SMFRCTPU4MD	02/26/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTPU4MD))
203-763-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	10/02/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-763-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	11/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-763-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	11/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-763-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	11/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-763-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	FAIRFIELD	BLFDCTAP2MD	11/13/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-764	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-764 is split into 1,000-number blocks - detail below
203-764-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	12/14/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-764-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	02/05/2008	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-764-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	11/19/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-764-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-764-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-764-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-764-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-764-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-764-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-764-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-765	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-766	CT	AMERICAN MESSAGING SERVICES, LLC		N/A	9748	NEW HAVEN	HRFRCT0379Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0379Z))
203-767	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-768	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-770	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-771	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-772	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772 is split into 1,000-number blocks - detail below
203-772-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-772-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-772-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	10/16/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-773	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-774	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-774 is split into 1,000-number blocks - detail below
203-774-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-774-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-774-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-774-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	NOCLLIKNOWN	01/10/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-774-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	NOCLLIKNOWN	07/21/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-774-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	NOCLLIKNOWN	08/03/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-774-6XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	WALLINGFD	NOCLLIKNOWN	06/12/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-774-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-774-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-774-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WALLINGFD	NOCLLIKNOWN	04/18/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-775	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	BRFDCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Brookfield Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: BRFDCT00DS0 🔧 Explore Switch(CLLI: BRFDCT00DS0))
203-776	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-777	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-778	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-779	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MADISON	SMFRCTATXMD	00/00/0000	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-779 is split into 1,000-number blocks - detail below
203-779-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MADISON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-779-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MADISON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-779-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MADISON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-779-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MADISON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-779-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MADISON	SMFRCTATXMD	N/A	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-779-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	MADISON	NOCLLIKNOWN	11/22/2004	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-779-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MADISON	NOCLLIKNOWN	05/05/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-779-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	MADISON	NOCLLIKNOWN	05/30/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-779-8XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	MADISON	SMFRCTATXMD	03/18/2009	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-779-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	MADISON	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-780	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	HRFRCT0380Z	10/02/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-780 is split into 1,000-number blocks - detail below
203-780-0XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	HRFRCT0380Z	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-780-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	11/08/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-780-2XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	HRFRCT0380Z	10/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-780-3XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	HRFRCT0380Z	10/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-780-4XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	HRFRCT0380Z	10/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-780-5XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	HRFRCT0380Z	10/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-780-6XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	NEW HAVEN	HRFRCT0380Z	10/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-780-7XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	NEW HAVEN	NOCLLIKNOWN	09/04/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-780-8XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	08/30/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-780-9XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	08/04/2014	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-781	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781 is split into 1,000-number blocks - detail below
203-781-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	02/12/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-781-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-781-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-782	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-783	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	MILFORD	MLFRCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Milford Switch Type: N/A LATA: Connecticut (920) Tandem: MLFRCT00DS0 🔧 Explore Switch(CLLI: MLFRCT00DS0))
203-784	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-785	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-786	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787 is split into 1,000-number blocks - detail below
203-787-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-787-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	06/04/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-787-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-788	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-789	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS3	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: N/A LATA: Connecticut (920) Tandem: NWHNCT03DS3 🔧 Explore Switch(CLLI: NWHNCT03DS3))
203-790	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-791	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-792	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-793	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	SMFRCTQI9MD	03/23/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-793 is split into 1,000-number blocks - detail below
203-793-0XXX	CT	PEERLESS NETWORK OF CONNECTICUT, LLC - CT		N/A	539F	WALLINGFD	NOCLLIKNOWN	04/05/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-793-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WALLINGFD	SMFRCTATXMD	03/17/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-793-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-793-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WALLINGFD	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-793-4XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WALLINGFD	NOCLLIKNOWN	10/23/2020	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-793-5XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WALLINGFD	NOCLLIKNOWN	09/24/2020	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-793-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	WALLINGFD	NOCLLIKNOWN	01/25/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-793-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WALLINGFD	NOCLLIKNOWN	10/19/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-793-8XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WALLINGFD	NOCLLIKNOWN	02/03/2017	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-793-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	WALLINGFD	NOCLLIKNOWN	11/13/2020	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-794	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-794 is split into 1,000-number blocks - detail below
203-794-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-794-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-794-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	06/06/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-794-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-794-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-794-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-794-6XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	DANBURY	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-794-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	07/13/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-794-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-794-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-795	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	ORNGCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Orange Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: ORNGCT00RS0 🔧 Explore Switch(CLLI: ORNGCT00RS0))
203-796	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-797	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-798	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-799	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	ORNGCT00RS0	00/00/0000	Prefix Type: ICO Switch Name: Orange Switch Type: WECO 5ESS Remote (5A RSM) LATA: Connecticut (920) Tandem: ORNGCT00RS0 🔧 Explore Switch(CLLI: ORNGCT00RS0))
203-800	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	03/10/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-800 is split into 1,000-number blocks - detail below
203-800-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	03/11/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-800-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	11/13/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-800-2XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-800-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-800-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	04/22/2011	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-800-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	04/05/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-800-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	04/05/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-800-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-800-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-800-9XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-801	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW CANAAN	NWCNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: New Canaan CT Switch Type: N/A LATA: Connecticut (920) Tandem: NRWLCT0204T 🔧 Explore Switch(CLLI: NWCNCT00DS0))
203-801 is split into 1,000-number blocks - detail below
203-801-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW CANAAN	NWCNCT00DS0	N/A	Prefix Type: ICO Switch Name: New Canaan CT Switch Type: N/A LATA: Connecticut (920) Tandem: NRWLCT0204T 🔧 Explore Switch(CLLI: NWCNCT00DS0))
203-801-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NEW CANAAN	SMFRCTDSDS0	11/05/2003	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-801-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW CANAAN	NWCNCT00DS0	N/A	Prefix Type: ICO Switch Name: New Canaan CT Switch Type: N/A LATA: Connecticut (920) Tandem: NRWLCT0204T 🔧 Explore Switch(CLLI: NWCNCT00DS0))
203-801-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW CANAAN	NWCNCT00DS0	N/A	Prefix Type: ICO Switch Name: New Canaan CT Switch Type: N/A LATA: Connecticut (920) Tandem: NRWLCT0204T 🔧 Explore Switch(CLLI: NWCNCT00DS0))
203-801-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW CANAAN	NWCNCT00DS0	N/A	Prefix Type: ICO Switch Name: New Canaan CT Switch Type: N/A LATA: Connecticut (920) Tandem: NRWLCT0204T 🔧 Explore Switch(CLLI: NWCNCT00DS0))
203-801-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW CANAAN	SMFRCTATXMD	11/05/2003	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-801-6XXX	CT	IP HORIZON LLC	0027469766	RMD0001571	515J	NEW CANAAN	NOCLLIKNOWN	07/05/2022	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-801-7XXX	CT	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	NEW CANAAN	NOCLLIKNOWN	06/12/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-801-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW CANAAN	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-801-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW CANAAN	NWCNCT00DS0	N/A	Prefix Type: ICO Switch Name: New Canaan CT Switch Type: N/A LATA: Connecticut (920) Tandem: NRWLCT0204T 🔧 Explore Switch(CLLI: NWCNCT00DS0))
203-802	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-802 is split into 1,000-number blocks - detail below
203-802-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-802-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-802-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	09/12/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-802-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	10/03/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-802-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	03/20/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-802-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	12/12/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-802-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	07/20/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-802-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	09/12/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-802-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	07/11/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-802-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	10/03/2008	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-803	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-803 is split into 1,000-number blocks - detail below
203-803-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-803-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	NOCLLIKNOWN	01/13/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-803-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	NOCLLIKNOWN	01/05/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-803-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-803-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	NOCLLIKNOWN	02/26/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-803-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	07/18/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-803-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	09/07/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-803-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	01/05/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-803-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	10/14/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-803-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-804	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-805	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WATERBURY	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-805 is split into 1,000-number blocks - detail below
203-805-0XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WATERBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-805-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	01/12/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-805-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	01/12/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-805-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	01/03/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-805-4XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	WATERBURY	HRFRCTCR3MD	08/30/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-805-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WATERBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-805-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	WATERBURY	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-805-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	12/12/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-805-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-805-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	11/10/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-806	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	CHESHIRE	HRFRCTCRDS0	00/00/0000	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-806 is split into 1,000-number blocks - detail below
203-806-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-806-1XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	CHESHIRE	HRFRCTCR3MD	10/02/2017	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-806-2XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	CHESHIRE	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-806-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	CHESHIRE	SMFRCTATXMD	09/20/2006	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-806-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	CHESHIRE	NOCLLIKNOWN	05/08/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-806-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	CHESHIRE	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-806-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	CHESHIRE	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-806-7XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	CHESHIRE	NOCLLIKNOWN	02/10/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-806-8XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	CHESHIRE	HRFRCTCRDS0	N/A	Prefix Type: CLEC Switch Name: CONNECTICUT Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCRDS0))
203-806-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	CHESHIRE	NOCLLIKNOWN	02/10/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-807	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	01/30/2001	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-807 is split into 1,000-number blocks - detail below
203-807-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-807-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-807-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-807-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	01/05/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-807-4XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-807-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	01/29/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-807-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	05/26/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-807-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	07/02/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-807-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-807-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	04/01/2010	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-808	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	05/30/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-808 is split into 1,000-number blocks - detail below
203-808-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-808-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-808-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	06/03/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-808-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	01/23/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-808-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	01/23/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-808-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	03/23/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-808-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-808-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	06/09/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-808-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	06/24/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-808-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAPCM0	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	11/04/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809 is split into 1,000-number blocks - detail below
203-809-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	11/11/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	01/06/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	02/12/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	02/12/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	04/15/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	05/29/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	08/06/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	09/04/2003	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	03/15/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-809-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAPCM0	11/11/2002	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAPCM0))
203-810	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	07/27/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-810 is split into 1,000-number blocks - detail below
203-810-0XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	09/26/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-810-1XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	06/30/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-810-2XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	06/30/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-810-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	06/30/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-810-4XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	NORWALK	NRWLCT02SMD	05/15/2007	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02SMD))
203-810-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	NORWALK	NRWLCT02YMD	05/25/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-810-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	09/13/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-810-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	07/11/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-810-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	09/13/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-810-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	08/10/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-812	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812 is split into 1,000-number blocks - detail below
203-812-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	04/19/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-812-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-812-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	10/03/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-812-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	04/19/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-814	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-814 is split into 1,000-number blocks - detail below
203-814-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	02/16/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-814-1XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	BRIDGEPORT	NOCLLIKNOWN	04/27/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-814-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	04/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-814-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	BRIDGEPORT	HRFRCT0370Z	04/28/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-814-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	12/14/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-814-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	BRIDGEPORT	BLFDCTAP2MD	10/03/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-814-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	01/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-814-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	01/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-814-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	09/09/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-814-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	BRIDGEPORT	HRFRCTASBMD	03/10/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815 is split into 1,000-number blocks - detail below
203-815-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/07/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NEW HAVEN	NOCLLIKNOWN	03/19/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-815-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	06/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	01/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	08/08/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	03/13/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	03/13/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	11/03/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-815-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	03/13/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-816	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTQI9MD	03/14/2001	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-816 is split into 1,000-number blocks - detail below
203-816-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	TRUMBULL	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-816-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	06/30/2004	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-816-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-816-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-816-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-816-5XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	TRUMBULL	NOCLLIKNOWN	02/02/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-816-6XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTQI9MD	07/21/2003	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-816-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	TRUMBULL	NOCLLIKNOWN	11/21/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-816-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	TRUMBULL	SMFRCTQI9MD	06/14/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-816-9XXX	CT	TERRA NOVA TELECOM INC.	0021193057	RMD0001495	145J	TRUMBULL	NOCLLIKNOWN	03/11/2025	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-817	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-817 is split into 1,000-number blocks - detail below
203-817-0XXX	CT	CSC VOICE, LLC	0032580698	RMD0037007	612K	STAMFORD	NRWLCT02NMD	11/07/2011	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02NMD))
203-817-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	01/07/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-817-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	01/07/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-817-3XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	02/12/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-817-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	01/07/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-817-5XXX	CT	CABLEVISION LIGHTPATH, INC. - CT	0022322481	RMD0037229	4950	STAMFORD	NRWLCT02YMD	08/03/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NRWLCT02YMD))
203-817-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	11/05/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-817-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	07/15/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-817-8XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	07/15/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-817-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	STAMFORD	HRFRCTASBMD	07/15/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-818	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	NORWALK	SMFRCTDSDS0	00/00/0000	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-818 is split into 1,000-number blocks - detail below
203-818-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	05/02/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-818-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-818-2XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	01/04/2013	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-818-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	05/09/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-818-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	11/21/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-818-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	05/09/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-818-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	11/21/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-818-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	11/21/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-818-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	02/11/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-818-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	03/20/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-819	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-819 is split into 1,000-number blocks - detail below
203-819-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	05/07/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-819-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	05/07/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-819-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	04/08/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-819-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	03/12/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-819-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	WATERBURY	BLFDCTAP2MD	10/24/2011	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-819-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	07/27/2006	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-819-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	08/10/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-819-7XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	WATERBURY	NOCLLIKNOWN	02/08/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-819-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	WATERBURY	NOCLLIKNOWN	07/01/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-819-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	WATERBURY	HRFRCTASBMD	05/23/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-820	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820 is split into 1,000-number blocks - detail below
203-820-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	09/12/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-820-1XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820-2XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	NORWALK	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-820-3XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820-4XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820-5XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820-6XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-820-9XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-821	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821 is split into 1,000-number blocks - detail below
203-821-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	08/14/2007	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-821-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	09/23/2010	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-821-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-821-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW HAVEN	NWHNCT03DS0	N/A	Prefix Type: ICO Switch Name: New Haven Switch Type: WECO 5ESS Host (Digital) LATA: Connecticut (920) Tandem: NWHNCT03DS0 🔧 Explore Switch(CLLI: NWHNCT03DS0))
203-822	CT	AT&T - LOCAL (AT&T)		N/A	7421	NORWALK	NWHNCT02X5X	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-822 is split into 1,000-number blocks - detail below
203-822-0XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NORWALK	BLFDCTAP2MD	07/29/2014	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-822-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	10/01/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-822-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	10/01/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-822-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	01/31/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-822-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	01/31/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-822-5XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NORWALK	NOCLLIKNOWN	07/27/2023	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-822-6XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NORWALK	NOCLLIKNOWN	07/27/2023	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-822-7XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	03/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-822-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NORWALK	MDTWCTNIBMD	08/19/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-822-9XXX	CT	AT&T - LOCAL (AT&T)		N/A	7421	NORWALK	NWHNCT02X5X	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02X5X))
203-823	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-823 is split into 1,000-number blocks - detail below
203-823-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/08/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-823-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/08/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-823-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	09/21/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-823-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	10/12/2004	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-823-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	07/18/2007	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-823-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	08/05/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-823-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	08/05/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-823-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	08/05/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-823-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	08/05/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-823-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	NEW HAVEN	HRFRCTCR3MD	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTCR3MD))
203-824	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	MDTWCTNIBMD	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-825	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-826	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWLNCT02DS7	00/00/0000	Prefix Type: ICO Switch Name: NEW LONDON Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWLNCT02DS7))
203-826 is split into 1,000-number blocks - detail below
203-826-0XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	DANBURY	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-826-1XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	DANBURY	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-826-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	10/26/2010	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-826-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	DANBURY	SMFRCTATXMD	08/03/2005	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-826-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	08/15/2006	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-826-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	NWLNCT02DS7	06/08/2006	Prefix Type: ICO Switch Name: NEW LONDON Switch Type: Siemens DE5 EWSD RCU Sw Sys LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWLNCT02DS7))
203-826-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	DANBURY	SMFRC0164Z	08/15/2006	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRC0164Z))
203-826-7XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DANBURY	NOCLLIKNOWN	07/14/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-826-8XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	DANBURY	NOCLLIKNOWN	08/16/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-826-9XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	DANBURY	NOCLLIKNOWN	07/14/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-827	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	07/19/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827 is split into 1,000-number blocks - detail below
203-827-0XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	07/23/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	07/23/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-827-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	OLDGRNWICH	SMFRCTDSDS0	07/23/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-828	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-828 is split into 1,000-number blocks - detail below
203-828-0XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	SEYMOUR	NOCLLIKNOWN	10/30/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-828-1XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	SMFRCTQI9MD	09/04/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-828-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-828-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-828-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-828-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	SEYMOUR	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-828-6XXX	CT	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	SEYMOUR	NOCLLIKNOWN	12/14/2009	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-828-7XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	SEYMOUR	NOCLLIKNOWN	11/17/2005	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-828-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	SEYMOUR	NOCLLIKNOWN	11/25/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-829	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	00/00/0000	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829 is split into 1,000-number blocks - detail below
203-829-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NORWALK	HRFRCTASBMD	11/05/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-829-1XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-2XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-3XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-4XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-6XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-7XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-8XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-829-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NORWALK	BLFDCTAP2MD	N/A	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-830	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830 is split into 1,000-number blocks - detail below
203-830-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-830-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-831	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-832	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	04/06/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832 is split into 1,000-number blocks - detail below
203-832-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	04/10/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	04/10/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	12/07/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	12/07/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	12/07/2007	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	10/01/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	10/01/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	10/01/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	10/01/2010	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-832-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	STAMFORD	MDTWCTNIBMD	01/12/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-833	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/29/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-833 is split into 1,000-number blocks - detail below
203-833-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/30/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-833-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	07/30/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-833-2XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	08/06/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-833-3XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	08/06/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-833-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	08/06/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-833-5XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	NOCLLIKNOWN	08/31/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-833-6XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	NOCLLIKNOWN	08/31/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-833-7XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	NOCLLIKNOWN	08/31/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-833-8XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	NOCLLIKNOWN	08/31/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-833-9XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	NEW HAVEN	BLFDCTAP2MD	09/04/2015	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-834	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	WILTON	WLTOCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Wilton Switch Type: N/A LATA: Connecticut (920) Tandem: WLTOCT00DS0 🔧 Explore Switch(CLLI: WLTOCT00DS0))
203-835	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	NORWALK	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-836	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	12/06/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-836 is split into 1,000-number blocks - detail below
203-836-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	12/07/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-836-1XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	12/07/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-836-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	0004999405	RMD0002957	7229	NEW HAVEN	HRFRCTASDS0	09/21/2012	Prefix Type: CLEC Switch Name: HARTFORD Switch Type: Northern Telecom DMS100/200 Digital Host LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASDS0))
203-836-3XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	03/21/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-836-4XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	05/14/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-836-5XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	SMFRCTATXMD	01/19/2012	Prefix Type: IPES Switch Name: STAMFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTATXMD))
203-836-6XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	05/14/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-836-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	05/14/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-836-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NEW HAVEN	NOCLLIKNOWN	04/23/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-836-9XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW HAVEN	HRFRCTASBMD	03/12/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-837	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	00/00/0000	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-837 is split into 1,000-number blocks - detail below
203-837-0XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	N/A	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-837-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-837-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-837-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-837-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-837-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	DANBURY	MDTWCTNIBMD	07/14/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-837-7XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	DANBURY	HRFRCTASBMD	07/07/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
203-837-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-837-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	DANBURY	DNBRCT00DS1	N/A	Prefix Type: ICO Switch Name: Danbury Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: DNBRCT00DS1 🔧 Explore Switch(CLLI: DNBRCT00DS1))
203-838	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT02DS2	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT02DS2 🔧 Explore Switch(CLLI: NRWLCT02DS2))
203-839	CT	SPOK, INC. (Spok, Inc)	0015608417	RMD0007858	6630	NORWALK	HRFRCT0380Z	00/00/0000	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0380Z))
203-840	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT03DS0 🔧 Explore Switch(CLLI: NRWLCT03DS0))
203-841	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	HRFRCT0370Z	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-841 is split into 1,000-number blocks - detail below
203-841-0XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-841-1XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-841-2XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-841-3XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-841-4XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	WATERBURY	HRFRCT0370Z	N/A	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0370Z))
203-841-5XXX	CT	OMNIPOINT COMMUNICATIONS, INC. - CT (T-Mobile US, Inc)		N/A	6624	WATERBURY	BLFDCTAP2MD	05/10/2005	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
203-841-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	07/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-841-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	07/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-841-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	07/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-841-9XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	WATERBURY	MDTWCTNIBMD	07/25/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: MDTWCTNIBMD))
203-842	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTQI9MD	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-842 is split into 1,000-number blocks - detail below
203-842-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTQI9MD	08/02/2002	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-842-1XXX	CT	YMAX COMMUNICATIONS CORP. - CT (YMAX (a/k/a MagicJack))	0013563077	RMD0001448	350E	NORWALK	NOCLLIKNOWN	09/30/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-842-2XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-842-3XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-842-4XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-842-5XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	NORWALK	SMFRCTQI9MD	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTQI9MD))
203-842-6XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NORWALK	NWHNCTGODS0	06/23/2011	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-842-7XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NWHNCT02GT0	08/01/2011	Prefix Type: ICO Switch Name: NEW HAVEN Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCT02GT0))
203-842-8XXX	CT	BANDWIDTH.COM CLEC, LLC - CT	0017042060	RMD0003709	199F	NORWALK	NOCLLIKNOWN	08/23/2012	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-842-9XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NORWALK	NOCLLIKNOWN	12/12/2025	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-843	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	00/00/0000	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843 is split into 1,000-number blocks - detail below
203-843-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-1XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-2XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-3XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-4XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-5XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-6XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-7XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-8XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192	RMD0036909	4036	NEW HAVEN	BRPTCT04DS0	02/11/2004	Prefix Type: WIRELESS Switch Name: BRIDGEPORT Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BRPTCT04DS0))
203-843-9XXX	CT	TELEPORT COMMUNICATIONS AMERICA, LLC - CT (AT&T)	0004274114	RMD0003897	7143	NEW HAVEN	NOCLLIKNOWN	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-844	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	08/16/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844 is split into 1,000-number blocks - detail below
203-844-0XXX	CT	LEVEL 3 COMMUNICATIONS, LLC - CT (Lumen Technologies, Inc)	0015338122	RMD0006112	4800	FAIRFIELD	NOCLLIKNOWN	12/06/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
203-844-1XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-2XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-3XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	01/10/2005	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-4XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-5XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-6XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	09/02/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-7XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	08/18/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-8XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	08/18/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-844-9XXX	CT	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT (Verizon Communications)	0004999405	RMD0002957	7230	FAIRFIELD	SMFRCTDSDS0	08/18/2004	Prefix Type: CLEC Switch Name: STAMFORD Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: SMFRCTDSDS0))
203-845	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT03DS0 🔧 Explore Switch(CLLI: NRWLCT03DS0))
203-846	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT03DS0 🔧 Explore Switch(CLLI: NRWLCT03DS0))
203-847	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NORWALK	NRWLCT03DS0	00/00/0000	Prefix Type: ICO Switch Name: Norwalk Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: NRWLCT03DS0 🔧 Explore Switch(CLLI: NRWLCT03DS0))
203-848	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	NEW HAVEN	NWHNCTGODS0	00/00/0000	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NWHNCTGODS0))
203-848 is split into 1,000-number blocks - detail below
203-848-0XXX	CT	NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)	0003291192