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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
803-666	SC	FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC (Frontier Communications)		N/A	4335	SHAWAFBHTS	SHHGSCXB66E	00/00/0000	Prefix Type: ICO Switch Name: SHAWVIEW HEIGHTS Switch Type: AE-RSU LATA: Columbia SC (434) Tandem: CLMASCSN60T 🔧 Explore Switch(CLLI: SHHGSCXB66E))
803-666 is split into 1,000-number blocks - detail below
803-666-0XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	SHAWAFBHTS	NOCLLIKNOWN	10/20/2004	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-666-1XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	SHAWAFBHTS	NOCLLIKNOWN	02/07/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-666-2XXX	SC	FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC (Frontier Communications)		N/A	4335	SHAWAFBHTS	SHHGSCXB66E	N/A	Prefix Type: ICO Switch Name: SHAWVIEW HEIGHTS Switch Type: AE-RSU LATA: Columbia SC (434) Tandem: CLMASCSN60T 🔧 Explore Switch(CLLI: SHHGSCXB66E))
803-666-3XXX	SC	FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC (Frontier Communications)		N/A	4335	SHAWAFBHTS	SHHGSCXB66E	N/A	Prefix Type: ICO Switch Name: SHAWVIEW HEIGHTS Switch Type: AE-RSU LATA: Columbia SC (434) Tandem: CLMASCSN60T 🔧 Explore Switch(CLLI: SHHGSCXB66E))
803-666-4XXX	SC	FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC (Frontier Communications)		N/A	4335	SHAWAFBHTS	SHHGSCXB66E	N/A	Prefix Type: ICO Switch Name: SHAWVIEW HEIGHTS Switch Type: AE-RSU LATA: Columbia SC (434) Tandem: CLMASCSN60T 🔧 Explore Switch(CLLI: SHHGSCXB66E))
803-666-5XXX	SC	TWC IP ENABLED SERVICES, LLC		N/A	793K	SHAWAFBHTS	NOCLLIKNOWN	09/19/2006	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-666-6XXX	SC	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC	0004999405	RMD0002957	8534	SHAWAFBHTS	CLMASCLNX3X	09/14/2004	Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCLNX3X))
803-666-7XXX	SC	FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC (Frontier Communications)		N/A	4335	SHAWAFBHTS	SHHGSCXB66E	N/A	Prefix Type: ICO Switch Name: SHAWVIEW HEIGHTS Switch Type: AE-RSU LATA: Columbia SC (434) Tandem: CLMASCSN60T 🔧 Explore Switch(CLLI: SHHGSCXB66E))
803-666-8XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	SHAWAFBHTS	NOCLLIKNOWN	07/19/2005	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-666-9XXX	SC	FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - SC (Frontier Communications)		N/A	4335	SHAWAFBHTS	SHHGSCXB66E	N/A	Prefix Type: ICO Switch Name: SHAWVIEW HEIGHTS Switch Type: AE-RSU LATA: Columbia SC (434) Tandem: CLMASCSN60T 🔧 Explore Switch(CLLI: SHHGSCXB66E))