Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 707 [Rate centres in NPA 707] [Dial plan for NPA 707]

NXX: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
707-512 A St Helena CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
707-512 0 St Helena CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-05-17   
707-512 1 St Helena CA   515J IP HORIZON LLC 722      
707-512 2 St Helena CA   515J IP HORIZON LLC 722      
707-512 3 St Helena CA   318J COMCAST IP PHONE, LLC 722   2017-07-25   
707-512 4 St Helena CA   649C ONVOY, LLC - CA 722   2018-12-24   
707-512 5 St Helena CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2015-11-12   
707-512 6 St Helena CA   508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-04-09   
707-512 7 St Helena CA   649C ONVOY, LLC - CA 722   2009-12-24   
707-512 8 St Helena CA   649C ONVOY, LLC - CA 722   2016-03-28   
707-512 9 St Helena CA   649C ONVOY, LLC - CA 722   2016-03-28   

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

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