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: 816

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-816 A Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 0 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 1 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 2 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 3 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 4 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 5 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 6 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 7 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 8 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   
657-816 9 Garden Grove CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-19   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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