Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
925-724 A Livermore CA SNJSCAYB0MD  722      
925-724 0 Livermore CA SNJSCAYB0MD  722      
925-724 2 Livermore CA SNJSCAYB0MD  722      
925-725 A Danville CA SNJSCAYB0MD  722      
925-726 A Concord CA SNJSCAYB0MD  722      
925-726 2 Concord CA SNJSCAYB0MD  722      
925-727 A Antioch CA SNJSCAYB0MD  722      
925-771 A Concord CA SNJSCAYB0MD  722      
925-771 1 Concord CA SNJSCAYB0MD  722      
925-771 2 Concord CA SNJSCAYB0MD  722      
925-771 3 Concord CA SNJSCAYB0MD  722      
925-771 5 Concord CA SNJSCAYB0MD  722      
925-771 6 Concord CA SNJSCAYB0MD  722      
925-771 7 Concord CA SNJSCAYB0MD  722      
925-771 8 Concord CA SNJSCAYB0MD  722      
925-791 A Danville CA SNJSCAYB0MD  722      
925-791 2 Danville CA SNJSCAYB0MD  722      
925-791 4 Danville CA SNJSCAYB0MD  722      
925-791 6 Danville CA SNJSCAYB0MD  722      
925-809 A East Contra Costa CA SNJSCAYB0MD  722      
925-809 3 East Contra Costa CA SNJSCAYB0MD  722      
925-809 9 East Contra Costa CA SNJSCAYB0MD  722      
925-835 A Sunol CA SNJSCAYB0MD  722      
925-835 9 Sunol CA SNJSCAYB0MD  722      
925-839 A Martinez CA SNJSCAYB0MD  722      
925-839 2 Martinez CA SNJSCAYB0MD  722      
925-839 9 Martinez CA SNJSCAYB0MD  722      
925-844 A Clayton CA SNJSCAYB0MD  722      
925-844 9 Clayton CA SNJSCAYB0MD  722      
925-849 A Concord CA SNJSCAYB0MD  722      
925-849 1 Concord CA SNJSCAYB0MD  722      
925-849 3 Concord CA SNJSCAYB0MD  722      
925-849 8 Concord CA SNJSCAYB0MD  722      
925-849 9 Concord CA SNJSCAYB0MD  722      
925-871 2 Lafayette CA SNJSCAYB0MD  722      
925-884 2 Bishop Ranch CA SNJSCAYB0MD  722      
925-887 1 Concord CA SNJSCAYB0MD  722      
925-887 2 Concord CA SNJSCAYB0MD  722      
925-887 3 Concord CA SNJSCAYB0MD  722      
925-887 5 Concord CA SNJSCAYB0MD  722      
925-887 7 Concord CA SNJSCAYB0MD  722      
925-889 1 Clayton CA SNJSCAYB0MD  722      
925-891 6 Walnut Creek CA SNJSCAYB0MD  722      
925-892 1 Pleasanton CA SNJSCAYB0MD  722      
925-954 A Walnut Creek CA SNJSCAYB0MD  722      
925-954 0 Walnut Creek CA SNJSCAYB0MD  722      
925-954 2 Walnut Creek CA SNJSCAYB0MD  722      
936-398 3 Corrigan TX HSTNTXPB6MD  560   2012-04-15   
936-931 6 Waller EMS TX HSTNTXPB6MD  560   2010-12-23   
940-220 5 Denton TX DLLSTXHW6MD  552   2005-08-29   

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

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