Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-312 A Crockett CA SNJUCACL4MD  939H COMMIO, LLC 722      
510-312 0 Crockett CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 1 Crockett CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 2 Crockett CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 3 Crockett CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 4 Crockett CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-10-09   
510-312 5 Crockett CA SNFCCAMKX9X  073H TELNYX LLC 722   2024-04-14   
510-312 6 Crockett CA OKLDCA03XKY  624H ONVOY SPECTRUM, LLC 722   2024-08-18   
510-312 7 Crockett CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-09-15   
510-312 8 Crockett CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2023-12-14   
510-312 9 Crockett CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2023-12-14   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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