Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 628 [Rate centres in NPA 628] [Dial plan for NPA 628]

NXX: 977

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-977 A San Francisco: Montrose-Evergreen DA CA SNJUCACL7MD  965H FRACTEL, LLC 722      
628-977 0 San Francisco: Montrose-Evergreen DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2020-09-11   
628-977 1 San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2022-01-06   
628-977 2 San Francisco: Montrose-Evergreen DA CA SNFCCA21XPZ  553J WHITESKY COMMUNICATIONS, LLC 722   2021-09-16   
628-977 3 San Francisco: Montrose-Evergreen DA CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2024-08-18   
628-977 4 San Francisco: Montrose-Evergreen DA CA SNRTCAHFDS0  433E SONIC TELECOM, LLC - CA 722   2020-09-11   
628-977 5 San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-10-09   
628-977 6 San Francisco: Montrose-Evergreen DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-10-09   
628-977 7 San Francisco: Montrose-Evergreen DA CA SNJUCACL7MD  965H FRACTEL, LLC 722   2020-09-10   
628-977 9 San Francisco: Montrose-Evergreen DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2022-11-06   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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