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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
979-331	TX	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	ANGLETON	HSTNTX01G04	03/17/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTNTX01G04))
979-331 is split into 1,000-number blocks - detail below
979-331-0XXX	TX	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	ANGLETON	HSTNTX01G04	01/31/2020	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTNTX01G04))
979-331-1XXX	TX	TELEPORT COMMUNICATIONS AMERICA, LLC - TX (AT&T)	0004274114	RMD0003897	7138	ANGLETON	NOCLLIKNOWN	08/03/2015	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
979-331-2XXX	TX	AERIAL COMMUNICATIONS, INC. (T-Mobile)		N/A	6701	ANGLETON	HSTDTXBGBMD	07/12/2023	Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTDTXBGBMD))
979-331-3XXX	TX	COMCAST IP PHONE, LLC (Comcast)	0008497687	RMD0003552	318J	ANGLETON	NOCLLIKNOWN	09/28/2016	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
979-331-4XXX	TX	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	ANGLETON	HSTNTX01G04	09/17/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTNTX01G04))
979-331-5XXX	TX	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	ANGLETON	HSTNTX01G04	06/29/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTNTX01G04))
979-331-6XXX	TX	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	ANGLETON	HSTNTX01G04	06/12/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTNTX01G04))
979-331-7XXX	TX	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	ANGLETON	HSTSTXJV6MD	04/21/2015	Prefix Type: IPES Switch Name: HOUSTON Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTSTXJV6MD))
979-331-8XXX	TX	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	ANGLETON	HSTNTX01G04	03/17/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTNTX01G04))
979-331-9XXX	TX	NEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)	0003291192	RMD0036909	6534	ANGLETON	HSTNTX01G04	03/17/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Houston TX (560) Tandem: N/A 🔧 Explore Switch(CLLI: HSTNTX01G04))