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: 898

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-898 A Santa Ana CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-11-21   
657-898 6 Santa Ana CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-11-21   
657-898 7 Santa Ana CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-11-21   
657-898 8 Santa Ana CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-11-21   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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