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: SNFCCA05DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-206 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-282 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-285 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-401 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-550 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-641 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-642 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-643 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-647 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-648 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-695 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-821 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-824 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-826 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-920 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-970 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      

Last updated: Sun, 31 May 2020 11:59:01 UTC

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