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: HYWRCA11DS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-723 3 Hayward CA 9740 PACIFIC BELL 722      
510-723 5 Hayward CA 9740 PACIFIC BELL 722      
510-723 6 Hayward CA 9740 PACIFIC BELL 722      
510-723 7 Hayward CA 9740 PACIFIC BELL 722      
510-723 8 Hayward CA 9740 PACIFIC BELL 722      
510-723 9 Hayward CA 9740 PACIFIC BELL 722      
510-732 A Hayward CA 9740 PACIFIC BELL 722      
510-732 0 Hayward CA 9740 PACIFIC BELL 722      
510-732 1 Hayward CA 9740 PACIFIC BELL 722      
510-732 2 Hayward CA 9740 PACIFIC BELL 722      
510-732 3 Hayward CA 9740 PACIFIC BELL 722      
510-732 5 Hayward CA 9740 PACIFIC BELL 722      
510-732 6 Hayward CA 9740 PACIFIC BELL 722      
510-732 7 Hayward CA 9740 PACIFIC BELL 722      
510-732 8 Hayward CA 9740 PACIFIC BELL 722      
510-732 9 Hayward CA 9740 PACIFIC BELL 722      
510-780 A Hayward CA 9740 PACIFIC BELL 722      
510-780 0 Hayward CA 9740 PACIFIC BELL 722      
510-780 1 Hayward CA 9740 PACIFIC BELL 722      
510-780 4 Hayward CA 9740 PACIFIC BELL 722      
510-780 5 Hayward CA 9740 PACIFIC BELL 722      
510-780 7 Hayward CA 9740 PACIFIC BELL 722      
510-780 8 Hayward CA 9740 PACIFIC BELL 722      
510-780 9 Hayward CA 9740 PACIFIC BELL 722      
510-781 A Hayward CA 9740 PACIFIC BELL 722      
510-781 0 Hayward CA 9740 PACIFIC BELL 722      
510-781 1 Hayward CA 9740 PACIFIC BELL 722      
510-781 3 Hayward CA 9740 PACIFIC BELL 722      
510-781 4 Hayward CA 9740 PACIFIC BELL 722      
510-781 5 Hayward CA 9740 PACIFIC BELL 722      
510-781 6 Hayward CA 9740 PACIFIC BELL 722      
510-781 7 Hayward CA 9740 PACIFIC BELL 722      
510-781 8 Hayward CA 9740 PACIFIC BELL 722      
510-782 A Hayward CA 9740 PACIFIC BELL 722      
510-783 A Hayward CA 9740 PACIFIC BELL 722      
510-784 A Hayward CA 9740 PACIFIC BELL 722      
510-785 A Hayward CA 9740 PACIFIC BELL 722      
510-786 A Hayward CA 9740 PACIFIC BELL 722      
510-786 0 Hayward CA 9740 PACIFIC BELL 722      
510-786 1 Hayward CA 9740 PACIFIC BELL 722      
510-786 2 Hayward CA 9740 PACIFIC BELL 722      
510-786 3 Hayward CA 9740 PACIFIC BELL 722      
510-786 4 Hayward CA 9740 PACIFIC BELL 722      
510-786 5 Hayward CA 9740 PACIFIC BELL 722      
510-786 6 Hayward CA 9740 PACIFIC BELL 722      
510-786 9 Hayward CA 9740 PACIFIC BELL 722      
510-887 A Hayward CA 9740 PACIFIC BELL 722      

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

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