Local Calling Guide

Area code/prefix search

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NPA: 628 [Rate centres in NPA 628] [Dial plan for NPA 628]

NXX: 338

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-338 A San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-338 0 San Francisco: Montrose-Evergreen DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2023-12-25   
628-338 1 San Francisco: Montrose-Evergreen DA CA SNJUCACL4MD  939H COMMIO, LLC 722   2024-01-27   
628-338 2 San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-12-18   
628-338 3 San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-12-18   
628-338 4 San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-02-24   
628-338 5 San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-02-24   
628-338 7 San Francisco: Montrose-Evergreen DA CA SNJUCACL4MD  939H COMMIO, LLC 722   2024-01-27   
628-338 8 San Francisco: Montrose-Evergreen DA CA SNJUCACL4MD  939H COMMIO, LLC 722   2024-01-27   
628-338 9 San Francisco: Montrose-Evergreen DA CA SNJUCACL4MD  939H COMMIO, LLC 722   2024-01-27   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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