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: 897

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-897 A Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   
657-897 3 Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   
657-897 4 Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   
657-897 5 Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   
657-897 6 Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   
657-897 7 Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   
657-897 8 Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   
657-897 9 Orange CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-12-22   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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