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: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-237 A Sausalito CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
628-237 0 Sausalito CA   649C ONVOY, LLC - CA 722   2016-05-02   
628-237 1 Sausalito CA   649C ONVOY, LLC - CA 722   2016-05-02   
628-237 2 Sausalito CA   649C ONVOY, LLC - CA 722   2016-05-02   
628-237 3 Sausalito CA   649C ONVOY, LLC - CA 722   2016-05-05   
628-237 4 Sausalito CA   649C ONVOY, LLC - CA 722   2016-05-05   
628-237 5 Sausalito CA   515J IP HORIZON LLC 722   2016-09-14   
628-237 6 Sausalito CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-09-16   
628-237 7 Sausalito CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-09-16   
628-237 8 Sausalito CA   6529 T-MOBILE USA, INC. 722   2016-09-11   
628-237 9 Sausalito CA   6529 T-MOBILE USA, INC. 722   2016-05-01   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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