Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 820

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-820 A Redwood City CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722      
650-820 0 Redwood City CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-07-23   
650-820 1 Redwood City CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-09-10   
650-820 2 Redwood City CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2024-08-18   
650-820 3 Redwood City CA   433E SONIC TELECOM, LLC - CA 722   2025-05-09   
650-820 4 Redwood City CA SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2023-07-03   
650-820 5 Redwood City CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2025-12-15   
650-820 6 Redwood City CA   649C ONVOY, LLC - CA 722   2026-03-14   
650-820 7 Redwood City CA   649C ONVOY, LLC - CA 722   2026-03-14   
650-820 8 Redwood City CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2023-04-24   
650-820 9 Redwood City CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-09-10   

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

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