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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
803-621	SC	IDT AMERICA, CORP. - SC		N/A	467E	BARNWELL	CLMASCSAX8X	08/05/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSAX8X))
803-621 is split into 1,000-number blocks - detail below
803-621-0XXX	SC	BANDWIDTH.COM CLEC, LLC - SC	0017042060	RMD0003709	077F	BARNWELL	NOCLLIKNOWN	06/10/2014	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-621-1XXX	SC	NEW CINGULAR WIRELESS PCS, LLC - GA (AT&T Wireless)	0003291192	RMD0036909	6214	BARNWELL	CLMASCSAXSX	02/10/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSAXSX))
803-621-2XXX	SC	IDT AMERICA, CORP. - SC		N/A	467E	BARNWELL	CLMASCSAX8X	08/08/2008	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSAX8X))
803-621-3XXX	SC	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC	0004999405	RMD0002957	8534	BARNWELL	CLMASCLNX3X	01/05/2012	Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCLNX3X))
803-621-4XXX	SC	ONVOY, LLC - SC (Sinch)	0004323028	RMD0001966	548E	BARNWELL	NOCLLIKNOWN	02/16/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-621-5XXX	SC	ONVOY, LLC - SC (Sinch)	0004323028	RMD0001966	548E	BARNWELL	NOCLLIKNOWN	02/16/2016	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-621-6XXX	SC	TELEPORT COMMUNICATIONS AMERICA SC- LLC (AT&T)		N/A	635C	BARNWELL	NOCLLIKNOWN	01/27/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-621-7XXX	SC	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	BARNWELL	NOCLLIKNOWN	06/19/2014	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
803-621-8XXX	SC	NEW CINGULAR WIRELESS PCS, LLC - GA (AT&T Wireless)	0003291192	RMD0036909	6214	BARNWELL	CLMASCSAXSX	02/10/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: CLMASCSAXSX))
803-621-9XXX	SC	PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC		N/A	098H	BARNWELL	NOCLLIKNOWN	12/31/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Columbia SC (434) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))