Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

NXX: 951

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-951 A Hayward CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-951 0 Hayward CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-09-19   
510-951 1 Hayward CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-09-19   
510-951 2 Hayward CA SNFCCA21XPZ  553J WHITESKY COMMUNICATIONS, LLC 722   2021-09-20   
510-951 3 Hayward CA SNJUCACL4MD  939H COMMIO, LLC 722   2021-09-20   
510-951 4 Hayward CA SNJUCACL4MD  939H COMMIO, LLC 722   2021-09-20   
510-951 5 Hayward CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2022-05-15   
510-951 6 Hayward CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2021-09-26   
510-951 7 Hayward CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2021-09-26   
510-951 8 Hayward CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2021-09-24   
510-951 9 Hayward CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2022-05-15   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.