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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
843-499	SC	SUNCOM DBA T-MOBILE USA		N/A	8645	MONCKS COR	CHTNSC75CM1	05/06/2002	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSC75CM1))
843-499 is split into 1,000-number blocks - detail below
843-499-0XXX	SC	SUNCOM DBA T-MOBILE USA		N/A	8645	MONCKS COR	CHTNSC75CM1	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSC75CM1))
843-499-1XXX	SC	NEW CINGULAR WIRELESS PCS, LLC - GA (AT&T Wireless)	0003291192	RMD0036909	6214	MONCKS COR	CHTNSCDT05Z	10/24/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCDT05Z))
843-499-2XXX	SC	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC (Verizon Wireless)	0003290673	RMD0003382	6398	MONCKS COR	CHTNSCPSX6Z	05/06/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCPSX6Z))
843-499-3XXX	SC	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC (Verizon Wireless)	0003290673	RMD0003382	6398	MONCKS COR	CHTNSCPSX6Z	05/06/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSCPSX6Z))
843-499-4XXX	SC	SUNCOM DBA T-MOBILE USA		N/A	8645	MONCKS COR	CHTNSC75CM1	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSC75CM1))
843-499-5XXX	SC	SUNCOM DBA T-MOBILE USA		N/A	8645	MONCKS COR	CHTNSC75CM1	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSC75CM1))
843-499-6XXX	SC	SUNCOM DBA T-MOBILE USA		N/A	8645	MONCKS COR	CHTNSC75CM1	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSC75CM1))
843-499-7XXX	SC	SUNCOM DBA T-MOBILE USA		N/A	8645	MONCKS COR	CHTNSC75CM1	10/28/2013	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSC75CM1))
843-499-8XXX	SC	TWC IP ENABLED SERVICES, LLC		N/A	793K	MONCKS COR	NOCLLIKNOWN	01/24/2013	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
843-499-9XXX	SC	SUNCOM DBA T-MOBILE USA		N/A	8645	MONCKS COR	CHTNSC75CM1	N/A	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Charleston SC (436) Tandem: N/A 🔧 Explore Switch(CLLI: CHTNSC75CM1))