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: SNRSCA01DS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
707-393 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-541 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-543 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-566 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-568 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-569 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-570 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-571 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-573 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-575 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-576 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-577 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-578 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-579 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-591 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-808 A Santa Rosa CA 9740 PACIFIC BELL 722      
707-817 A Santa Rosa CA 9740 PACIFIC BELL 722      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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