Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 679

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-679 A East Contra Costa CA OKLYCA11DS0  9740 PACIFIC BELL 722      
925-679 0 East Contra Costa CA   9740 PACIFIC BELL 722      
925-679 1 East Contra Costa CA   9740 PACIFIC BELL 722      
925-679 2 East Contra Costa CA   9740 PACIFIC BELL 722      
925-679 3 East Contra Costa CA   9740 PACIFIC BELL 722      
925-679 4 East Contra Costa CA   318J COMCAST IP PHONE, LLC 722   2015-12-03   
925-679 5 East Contra Costa CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2008-11-24   
925-679 6 East Contra Costa CA   508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-03-28   
925-679 7 East Contra Costa CA   516C AT&T CORP. 722   2010-04-30   
925-679 8 East Contra Costa CA   9740 PACIFIC BELL 722      
925-679 9 East Contra Costa CA   9740 PACIFIC BELL 722      

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

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