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: SNFCCA21DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-243 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-281 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-284 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-369 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-371 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-442 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-512 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-536 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-537 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-542 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-545 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-546 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-547 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-615 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-624 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-644 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-764 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-768 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-777 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-778 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-836 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-856 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-882 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-894 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-957 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-998 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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