Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: OKLDCA03DS5

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-837 A Richmond CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
707-835 A Petaluma: Main DA CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-386 A Orinda CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-392 A East Contra Costa CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-635 A Pittsburg CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-658 A Walnut Creek CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-659 A Bishop Ranch CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-693 A Clayton CA 7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      

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

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