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: 288

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-288 A Mill Valley CA SNJUCACL7MD  965H FRACTEL, LLC 722      
628-288 0 Mill Valley CA OKLECAZV1MD  5562 METROPCS, INC. 722   2020-07-26   
628-288 1 Mill Valley CA OKLECAZV1MD  5562 METROPCS, INC. 722   2020-07-26   
628-288 2 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-07-28   
628-288 3 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-08-17   
628-288 4 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-08-17   
628-288 5 Mill Valley CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-19   
628-288 6 Mill Valley CA SNJUCACL7MD  965H FRACTEL, LLC 722   2019-07-16   
628-288 7 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-03-04   
628-288 8 Mill Valley CA SNJUCACL7MD  965H FRACTEL, LLC 722   2019-05-14   
628-288 9 Mill Valley CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-09-13   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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