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: 827

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-827 A Silverado CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-19   
657-827 0 Silverado CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-19   
657-827 1 Silverado CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-19   
657-827 2 Silverado CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-19   
657-827 3 Silverado CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-19   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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