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 BOOST SUBSCRIBERCO L.L.C. 730   2025-06-26   
657-812 0 Santa Ana CA   490J BOOST SUBSCRIBERCO L.L.C. 730   2025-06-26   
657-812 5 Santa Ana CA   490J BOOST SUBSCRIBERCO L.L.C. 730   2025-10-25   
657-812 6 Santa Ana CA   490J BOOST SUBSCRIBERCO L.L.C. 730   2025-10-25   
657-812 7 Santa Ana CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-23   
657-812 8 Santa Ana CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-11-10   
657-812 9 Santa Ana CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-11-17   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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