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: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-666 A Ignacio CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-666 0 Ignacio CA   649C ONVOY, LLC - CA 722   2016-03-07   
628-666 1 Ignacio CA   649C ONVOY, LLC - CA 722   2016-03-07   
628-666 2 Ignacio CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-03-20   
628-666 3 Ignacio CA   649C ONVOY, LLC - CA 722   2016-04-22   
628-666 4 Ignacio CA   649C ONVOY, LLC - CA 722   2016-04-22   
628-666 5 Ignacio CA   649C ONVOY, LLC - CA 722   2016-05-05   
628-666 6 Ignacio CA   649C ONVOY, LLC - CA 722   2015-03-21   
628-666 7 Ignacio CA   6529 T-MOBILE USA, INC. 722   2016-07-11   
628-666 8 Ignacio CA   6529 T-MOBILE USA, INC. 722   2016-07-11   
628-666 9 Ignacio CA   649C ONVOY, LLC - CA 722   2016-02-29   

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

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