Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-251 A Garden Grove CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
657-251 0 Garden Grove CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2014-05-19   
657-251 1 Garden Grove CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2014-09-14   
657-251 2 Garden Grove CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-10-09   
657-251 3 Garden Grove CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2014-12-12   
657-251 4 Garden Grove CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2020-03-08   
657-251 5 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2020-02-27   
657-251 6 Garden Grove CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-11-06   
657-251 7 Garden Grove CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-12-10   
657-251 8 Garden Grove CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2014-12-31   
657-251 9 Garden Grove CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2014-10-20   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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