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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-223 A Orange CA   793K TWC IP ENABLED SERVICES, LLC 730      
657-223 0 Orange CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2013-10-19   
657-223 1 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-03-27   
657-223 2 Orange CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2013-12-21   
657-223 3 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-03-27   
657-223 4 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-03-27   
657-223 5 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-03-27   
657-223 6 Orange CA   793K TWC IP ENABLED SERVICES, LLC 730   2015-04-27   
657-223 7 Orange CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2013-10-16   
657-223 8 Orange CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2014-06-30   
657-223 9 Orange CA   793K TWC IP ENABLED SERVICES, LLC 730   2013-10-15   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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