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
925-574 2 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-574 4 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-574 7 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-583 A Livermore CA SNJSCAYB0MD  722      
925-583 0 Livermore CA SNJSCAYB0MD  722      
925-583 1 Livermore CA SNJSCAYB0MD  722      
925-583 2 Livermore CA SNJSCAYB0MD  722      
925-583 3 Livermore CA SNJSCAYB0MD  722      
925-583 8 Livermore CA SNJSCAYB0MD  722      
925-583 9 Livermore CA SNJSCAYB0MD  722      
925-587 A Dublin-San Ramon CA SNJSCAYB0MD  722      
925-588 A Walnut Creek CA SNJSCAYB0MD  722      
925-588 0 Walnut Creek CA SNJSCAYB0MD  722      
925-588 2 Walnut Creek CA SNJSCAYB0MD  722      
925-592 A Moraga CA SNJSCAYB0MD  722      
925-592 5 Moraga CA SNJSCAYB0MD  722   2003-09-30   
925-605 3 Livermore CA SNJSCAYB0MD  722      
925-621 A Pleasanton CA SNJSCAYB0MD  722      
925-621 1 Pleasanton CA SNJSCAYB0MD  722      
925-621 2 Pleasanton CA SNJSCAYB0MD  722      
925-621 3 Pleasanton CA SNJSCAYB0MD  722      
925-621 4 Pleasanton CA SNJSCAYB0MD  722      
925-621 5 Pleasanton CA SNJSCAYB0MD  722      
925-621 6 Pleasanton CA SNJSCAYB0MD  722      
925-621 7 Pleasanton CA SNJSCAYB0MD  722      
925-627 A Walnut Creek CA SNJSCAYB0MD  722      
925-627 1 Walnut Creek CA SNJSCAYB0MD  722      
925-627 2 Walnut Creek CA SNJSCAYB0MD  722      
925-627 3 Walnut Creek CA SNJSCAYB0MD  722      
925-627 4 Walnut Creek CA SNJSCAYB0MD  722      
925-627 5 Walnut Creek CA SNJSCAYB0MD  722      
925-627 7 Walnut Creek CA SNJSCAYB0MD  722      
925-627 9 Walnut Creek CA SNJSCAYB0MD  722      
925-643 A Pittsburg West CA SNJSCAYB0MD  722      
925-643 9 Pittsburg West CA SNJSCAYB0MD  722      
925-667 A Livermore CA SNJSCAYB0MD  722      
925-667 2 Livermore CA SNJSCAYB0MD  722      
925-678 A Danville CA SNJSCAYB0MD  722      
925-678 1 Danville CA SNJSCAYB0MD  722      
925-678 2 Danville CA SNJSCAYB0MD  722      
925-678 3 Danville CA SNJSCAYB0MD  722      
925-678 8 Danville CA SNJSCAYB0MD  722      
925-678 9 Danville CA SNJSCAYB0MD  722      
925-695 A Concord CA SNJSCAYB0MD  722      
925-701 A Pleasanton CA SNJSCAYB0MD  722      
925-701 0 Pleasanton CA SNJSCAYB0MD  722      
925-701 2 Pleasanton CA SNJSCAYB0MD  722      
925-701 3 Pleasanton CA SNJSCAYB0MD  722      
925-723 A Martinez CA SNJSCAYB0MD  722      
925-723 0 Martinez CA SNJSCAYB0MD  722      

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

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