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: 812

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-812 A Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-06-26   
657-812 0 Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-06-26   
657-812 1 Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-06-26   
657-812 2 Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-06-26   
657-812 3 Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-08-26   
657-812 4 Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-08-26   
657-812 5 Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-10-25   
657-812 6 Santa Ana CA   490J DISH WIRELESS, LLC 730   2025-10-25   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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