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: SNFCCA21DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-222 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-227 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-247 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-267 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-278 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-344 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-348 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-356 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-357 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-396 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-427 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-495 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-498 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-538 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-541 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-543 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-597 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-618 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-736 A San Francisco: Central DA CA 9740 PACIFIC BELL 722   2007-08-29   
415-744 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-808 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-817 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-896 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-904 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-905 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-908 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-932 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-947 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-972 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-973 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-974 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-975 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-977 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-978 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-979 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      
415-995 A San Francisco: Central DA CA 9740 PACIFIC BELL 722      

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

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