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: 688

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-688 A San Francisco: Central DA CA SNJUCACL7MD  965H FRACTEL, LLC 722      
628-688 0 San Francisco: Central DA CA SNRTCAHFDS0  433E SONIC TELECOM, LLC - CA 722   2020-12-19   
628-688 1 San Francisco: Central DA CA SNFCCAMKXIY  732J NUSO, LLC 722   2024-08-13   
628-688 2 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 3 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 4 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 5 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 6 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-04-10   
628-688 7 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-04-10   
628-688 8 San Francisco: Central DA CA SNJUCACL7MD  965H FRACTEL, LLC 722   2020-09-10   
628-688 9 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-04-10   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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