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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-257 A Mill Valley CA SNFCCAMM8MD  973E RACE TELECOMMUNICATIONS, INC. - CA 722      
628-257 0 Mill Valley CA SNFCCAMM8MD  973E RACE TELECOMMUNICATIONS, INC. - CA 722   2016-12-25   
628-257 1 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2017-05-18   
628-257 2 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2017-05-18   
628-257 3 Mill Valley CA SNJUCACL3MD  073H TELNYX LLC 722   2017-06-05   
628-257 4 Mill Valley CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2017-06-19   
628-257 5 Mill Valley CA FRMTCAJYDS0  707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 722   2018-07-13   
628-257 6 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-09-22   
628-257 7 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
628-257 8 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-09-22   
628-257 9 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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