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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
860-297	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	00/00/0000	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297 is split into 1,000-number blocks - detail below
860-297-0XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	N/A	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297-1XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	02/28/2002	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297-2XXX	CT	ONVOY, LLC - CT (Sinch)	0004323028	RMD0001966	639C	HARTFORD	HRFRCT03DS3	N/A	Prefix Type: CLEC Switch Name: Hartford Switch Type: N/A LATA: Connecticut (920) Tandem: HRFRCT03DS3 🔧 Explore Switch(CLLI: HRFRCT03DS3))
860-297-3XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	N/A	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297-4XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	N/A	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297-5XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	N/A	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297-6XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	N/A	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297-7XXX	CT	PAETEC ITEL, LLC	0015247810	RMD0038378	829J	HARTFORD	HRFRCT0342Z	04/24/2014	Prefix Type: IPES Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT0342Z))
860-297-8XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	N/A	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))
860-297-9XXX	CT	SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT		N/A	9147	HARTFORD	HRFRCT03GT0	N/A	Prefix Type: ICO Switch Name: HARTFORD Switch Type: N/A LATA: Connecticut (920) Tandem: N/A 🔧 Explore Switch(CLLI: HRFRCT03GT0))