TelcoData.US: Search by Area Code / Exchange

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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
310-321	CA	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	0003733813	RMD0003303	671J	EL SEGUNDO	IRVNCASM1MD	00/00/0000	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVNCASM1MD))
310-321 is split into 1,000-number blocks - detail below
310-321-0XXX	CA	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	0003733813	RMD0003303	671J	EL SEGUNDO	IRVNCASM1MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVNCASM1MD))
310-321-1XXX	CA	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	0003733813	RMD0003303	671J	EL SEGUNDO	IRVNCASM1MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVNCASM1MD))
310-321-2XXX	CA	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	EL SEGUNDO	IRVECA621MD	02/22/2007	Prefix Type: PCS Switch Name: IRVINE Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVECA621MD))
310-321-3XXX	CA	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	0003733813	RMD0003303	671J	EL SEGUNDO	IRVNCASM1MD	N/A	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVNCASM1MD))
310-321-4XXX	CA	LEVEL 3 COMMUNICATIONS, LLC - CA (Lumen Technologies, Inc)	0015338122	RMD0006112	8826	EL SEGUNDO	NOCLLIKNOWN	03/08/2011	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
310-321-5XXX	CA	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	0003733813	RMD0003303	671J	EL SEGUNDO	IRVNCASM1MD	03/22/2000	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVNCASM1MD))
310-321-6XXX	CA	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	0003733813	RMD0003303	671J	EL SEGUNDO	IRVNCASM1MD	03/22/2000	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVNCASM1MD))
310-321-7XXX	CA	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	0003733813	RMD0003303	671J	EL SEGUNDO	IRVNCASM1MD	03/13/2003	Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: IRVNCASM1MD))
310-321-8XXX	CA	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (Verizon Wireless)	0029611852	RMD0003439	6006	EL SEGUNDO	BLTNCAADGMD	11/08/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: BLTNCAADGMD))
310-321-9XXX	CA	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (Verizon Wireless)	0029611852	RMD0003439	6006	EL SEGUNDO	BLTNCAADGMD	08/10/2018	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Los Angeles CA (730) Tandem: N/A 🔧 Explore Switch(CLLI: BLTNCAADGMD))