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.
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OCN: 7453 U.S. TELEPACIFIC CORP. - CA

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
925-452 3 Dublin-San Ramon CA   722      
925-452 8 Dublin-San Ramon CA   722      
925-452 9 Dublin-San Ramon CA   722      
925-453 8 Livermore CA   722   2013-09-14   
925-474 A Pleasanton CA SNJSCAYBDS0  722      
925-474 0 Pleasanton CA   722      
925-474 1 Pleasanton CA   722      
925-474 2 Pleasanton CA   722      
925-474 3 Pleasanton CA   722      
925-474 8 Pleasanton CA   722      
925-474 9 Pleasanton CA   722      
925-480 A Bishop Ranch CA SNJSCAYBDS0  722      
925-480 3 Bishop Ranch CA   722      
925-480 4 Bishop Ranch CA   722      
925-482 A Walnut Creek CA SNJSCAYBDS0  722      
925-482 1 Walnut Creek CA   722      
925-482 2 Walnut Creek CA   722      
925-482 3 Walnut Creek CA   722      
925-482 8 Walnut Creek CA   722      
925-482 9 Walnut Creek CA   722      
925-495 6 Livermore CA   722   2017-04-17   
925-498 A Bishop Ranch CA SNJSCAYBDS0  722      
925-498 1 Bishop Ranch CA   722      
925-498 2 Bishop Ranch CA   722      
925-498 6 Bishop Ranch CA   722   2006-12-15   
925-498 7 Bishop Ranch CA   722   2006-12-15   
925-498 9 Bishop Ranch CA   722      
925-526 A Pittsburg CA SNJSCAYBDS0  722      
925-526 2 Pittsburg CA   722      
925-526 3 Pittsburg CA   722      
925-526 8 Pittsburg CA   722      
925-526 9 Pittsburg CA   722      
925-574 A Dublin-San Ramon CA SNRFCA15DS0  722      
925-574 2 Dublin-San Ramon CA   722      
925-574 4 Dublin-San Ramon CA   722      
925-574 7 Dublin-San Ramon CA   722      
925-583 A Livermore CA SNJSCAYBDS0  722      
925-583 0 Livermore CA   722      
925-583 1 Livermore CA   722      
925-583 2 Livermore CA   722      
925-583 3 Livermore CA   722      
925-583 8 Livermore CA   722      
925-583 9 Livermore CA   722      
925-605 3 Livermore CA   722      
925-621 A Pleasanton CA SNRFCA15DS0  722      
925-621 1 Pleasanton CA   722      
925-621 2 Pleasanton CA   722      
925-621 3 Pleasanton CA   722      
925-621 4 Pleasanton CA   722      
925-621 5 Pleasanton CA   722      

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Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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