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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
843-278	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	00/00/0000	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))
843-278 is split into 1,000-number blocks - detail below
843-278-0XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))
843-278-1XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))
843-278-2XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))
843-278-3XXX	SC	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC (Verizon Wireless)	0003290673	RMD0003382	6398	CHARLESTON	NOCLLIKNOWN	03/20/2023	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
843-278-4XXX	SC	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC (Verizon Wireless)	0003290673	RMD0003382	6398	CHARLESTON	NOCLLIKNOWN	03/20/2023	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
843-278-5XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))
843-278-6XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	06/29/2006	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))
843-278-7XXX	SC	TON80 COMMUNICATIONS, LLC	0025462672	RMD0005819	516J	CHARLESTON	NOCLLIKNOWN	05/19/2021	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
843-278-8XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	N/A	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))
843-278-9XXX	SC	LEVEL 3 COMMUNICATIONS, LLC - SC (Lumen Technologies, Inc)	0015338122	RMD0006112	5258	CHARLESTON	CHTNSCDTX4Y	02/23/2007	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDTX4Y))