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: 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
925-949 0 Walnut Creek CA SNFCCAFJDS0  722      
925-949 1 Walnut Creek CA SNFCCAFJDS0  722      
925-949 2 Walnut Creek CA SNFCCAFJDS0  722      
925-949 4 Walnut Creek CA SNFCCAFJDS0  722      
925-949 5 Walnut Creek CA SNFCCAFJDS0  722      
925-949 7 Walnut Creek CA SNFCCAFJDS0  722      
925-965 A Pleasanton CA SNRSCA01KMD  722      
925-965 9 Pleasanton CA SNRSCA01KMD  722      

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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