Local Calling Guide

Area code/prefix search

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

NXX: 308

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-308 A San Francisco: Montrose-Evergreen DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-09-20   
628-308 0 San Francisco: Montrose-Evergreen DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-11-08   
628-308 1 San Francisco: Montrose-Evergreen DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2025-09-26   
628-308 2 San Francisco: Montrose-Evergreen DA CA   433E SONIC TELECOM, LLC - CA 722   2026-08-07   
628-308 3 San Francisco: Montrose-Evergreen DA CA   649C ONVOY, LLC - CA 722   2026-10-11   
628-308 4 San Francisco: Montrose-Evergreen DA CA   649C ONVOY, LLC - CA 722   2026-10-11   
628-308 5 San Francisco: Montrose-Evergreen DA CA   649C ONVOY, LLC - CA 722   2026-11-21   
628-308 6 San Francisco: Montrose-Evergreen DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-09-20   
628-308 8 San Francisco: Montrose-Evergreen DA CA   433E SONIC TELECOM, LLC - CA 722   2025-05-28   
628-308 9 San Francisco: Montrose-Evergreen DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-09-20   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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