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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
860-448	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	00/00/0000	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))
860-448 is split into 1,000-number blocks - detail below
860-448-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))
860-448-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))
860-448-2XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))
860-448-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))
860-448-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))
860-448-5XXX	CT	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (Verizon Wireless)	0004516381	RMD0003408	6388	NEW LONDON	HRFRCTASBMD	08/27/2012	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCTASBMD))
860-448-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))
860-448-7XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	NEW LONDON	NOCLLIKNOWN	04/05/2019	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
860-448-8XXX	CT	METROPCS, INC. (T-Mobile US, Inc)		N/A	5562	NEW LONDON	BLFDCTAP2MD	02/01/2019	Prefix Type: PCS Switch Name: BLOOMFIELD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: BLFDCTAP2MD))
860-448-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	NEW LONDON	GRTNCT00DS0	N/A	Prefix Type: ICO Switch Name: Groton Switch Type: WECO 5ESS (Digital) LATA: Connecticut (920) Tandem: GRTNCT00DS0 🔧 Explore Switch(CLLI: GRTNCT00DS0))