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: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-999 A San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-999 0 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2015-04-24   
628-999 1 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2015-04-24   
628-999 2 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2015-04-24   
628-999 3 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2015-04-24   
628-999 4 San Francisco: Central DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2015-04-24   
628-999 5 San Francisco: Central DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-01-07   
628-999 6 San Francisco: Central DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-01-07   
628-999 7 San Francisco: Central DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-09-06   
628-999 8 San Francisco: Central DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-09-06   
628-999 9 San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-03-21   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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