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: SNRTCAHFDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-616 A Oakland: Berkeley DA CA 433E SONIC TELECOM, LLC - CA 722      
510-920 A Oakland: Main-Piedmont DA CA 433E SONIC TELECOM, LLC - CA 722      
628-256 A San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722      
628-270 A San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722      
628-280 A San Francisco: Montrose-Evergreen DA CA 433E SONIC TELECOM, LLC - CA 722      
707-708 A Santa Rosa CA 433E SONIC TELECOM, LLC - CA 722      
707-755 A Santa Rosa CA 433E SONIC TELECOM, LLC - CA 722      
707-757 A Santa Rosa CA 433E SONIC TELECOM, LLC - CA 722      
925-306 A East Contra Costa CA 433E SONIC TELECOM, LLC - CA 722      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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