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: SNFCCA04DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-241 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-355 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-431 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-436 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-437 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-487 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-522 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-551 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-554 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-556 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-557 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-565 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-581 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-701 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-703 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-934 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      

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

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