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.

Switch: SNRFCA15DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-746 A San Francisco: Central DA CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
415-758 A Corte Madera CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
415-825 A San Francisco: Juniper DA CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
707-302 A St Helena CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
707-603 A Napa CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
707-709 A Calistoga CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
925-574 A Dublin-San Ramon CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
925-621 A Pleasanton CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
925-627 A Walnut Creek CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
925-667 A Livermore CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
925-771 A Concord CA 7453 U.S. TELEPACIFIC CORP. - CA 722      
925-791 A Danville CA 7453 U.S. TELEPACIFIC CORP. - CA 722      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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