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: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 756

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-756 A Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2024-01-23   
657-756 0 Huntington Beach CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2023-02-09   
657-756 1 Huntington Beach CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2023-02-09   
657-756 2 Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2023-01-08   
657-756 3 Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2023-01-08   
657-756 4 Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2023-01-08   
657-756 5 Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2023-01-08   
657-756 6 Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2023-01-08   
657-756 7 Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2023-01-08   
657-756 8 Huntington Beach CA LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2023-01-08   
657-756 9 Huntington Beach CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2023-02-09   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.