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: SNFCCA01DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-217 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-277 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-283 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-288 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-352 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-391 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-398 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-399 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-402 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-439 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-445 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-677 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-765 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-772 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-875 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-956 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-986 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      

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

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