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: 285

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-285 A San Rafael CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-285 0 San Rafael CA   649C ONVOY, LLC - CA 722   2023-10-15   
628-285 1 San Rafael CA   649C ONVOY, LLC - CA 722   2023-10-15   
628-285 2 San Rafael CA   649C ONVOY, LLC - CA 722   2022-10-31   
628-285 3 San Rafael CA   649C ONVOY, LLC - CA 722   2022-10-31   
628-285 4 San Rafael CA   649C ONVOY, LLC - CA 722   2022-10-31   
628-285 5 San Rafael CA   649C ONVOY, LLC - CA 722   2022-10-31   
628-285 6 San Rafael CA   6529 T-MOBILE USA, INC. 722   2024-03-04   
628-285 7 San Rafael CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2023-09-01   
628-285 8 San Rafael CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-07-14   
628-285 9 San Rafael CA   6529 T-MOBILE USA, INC. 722   2022-11-01   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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