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.
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Switch: HYWRCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-259 A Hayward CA 9740 PACIFIC BELL 722      
510-264 A Hayward CA 9740 PACIFIC BELL 722      
510-265 A Hayward CA 9740 PACIFIC BELL 722      
510-266 A Hayward CA 9740 PACIFIC BELL 722      
510-293 A Hayward CA 9740 PACIFIC BELL 722      
510-670 A Hayward CA 9740 PACIFIC BELL 722      
510-723 A Hayward CA 9740 PACIFIC BELL 722      
510-732 A Hayward CA 9740 PACIFIC BELL 722      
510-780 A Hayward CA 9740 PACIFIC BELL 722      
510-781 A 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      
510-887 A Hayward CA 9740 PACIFIC BELL 722      

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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