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: 214

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-214 A Cypress CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-214 0 Cypress CA LNBHCAXPXQX  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-01-09   
657-214 1 Cypress CA LNBHCAXPXQX  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-01-09   
657-214 2 Cypress CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2012-04-03   
657-214 3 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2012-12-30   
657-214 4 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2012-12-30   
657-214 5 Cypress CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2012-03-10   
657-214 6 Cypress CA ANHMCA01DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2012-08-27   
657-214 7 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2012-12-30   
657-214 8 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2013-04-05   
657-214 9 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2013-04-05   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.