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: SNBUCA02DS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
650-866 4 South San Francisco CA 9740 PACIFIC BELL 722      
650-866 6 South San Francisco CA 9740 PACIFIC BELL 722      
650-866 7 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 A South San Francisco CA 9740 PACIFIC BELL 722      
650-869 0 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 1 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 2 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 3 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 4 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 5 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 6 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 7 South San Francisco CA 9740 PACIFIC BELL 722      
650-869 8 South San Francisco CA 9740 PACIFIC BELL 722      
650-874 A South San Francisco CA 9740 PACIFIC BELL 722      
650-875 A South San Francisco CA 9740 PACIFIC BELL 722      
650-876 A South San Francisco CA 9740 PACIFIC BELL 722      
650-877 A South San Francisco CA 9740 PACIFIC BELL 722      
650-877 0 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 1 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 3 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 4 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 5 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 6 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 7 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 8 South San Francisco CA 9740 PACIFIC BELL 722      
650-877 9 South San Francisco CA 9740 PACIFIC BELL 722      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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