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
510-259 A Hayward CA 9740 PACIFIC BELL 722      
510-259 0 Hayward CA 9740 PACIFIC BELL 722      
510-259 1 Hayward CA 9740 PACIFIC BELL 722      
510-259 2 Hayward CA 9740 PACIFIC BELL 722      
510-259 3 Hayward CA 9740 PACIFIC BELL 722      
510-259 4 Hayward CA 9740 PACIFIC BELL 722      
510-259 5 Hayward CA 9740 PACIFIC BELL 722      
510-259 6 Hayward CA 9740 PACIFIC BELL 722      
510-259 7 Hayward CA 9740 PACIFIC BELL 722      
510-264 A Hayward CA 9740 PACIFIC BELL 722      
510-264 0 Hayward CA 9740 PACIFIC BELL 722      
510-264 1 Hayward CA 9740 PACIFIC BELL 722      
510-264 3 Hayward CA 9740 PACIFIC BELL 722      
510-264 4 Hayward CA 9740 PACIFIC BELL 722      
510-264 5 Hayward CA 9740 PACIFIC BELL 722      
510-264 6 Hayward CA 9740 PACIFIC BELL 722      
510-264 8 Hayward CA 9740 PACIFIC BELL 722      
510-264 9 Hayward CA 9740 PACIFIC BELL 722      
510-265 A Hayward CA 9740 PACIFIC BELL 722      
510-265 0 Hayward CA 9740 PACIFIC BELL 722      
510-265 1 Hayward CA 9740 PACIFIC BELL 722      
510-265 2 Hayward CA 9740 PACIFIC BELL 722      
510-265 3 Hayward CA 9740 PACIFIC BELL 722      
510-265 5 Hayward CA 9740 PACIFIC BELL 722      
510-265 6 Hayward CA 9740 PACIFIC BELL 722      
510-265 7 Hayward CA 9740 PACIFIC BELL 722      
510-265 8 Hayward CA 9740 PACIFIC BELL 722      
510-266 A Hayward CA 9740 PACIFIC BELL 722      
510-266 0 Hayward CA 9740 PACIFIC BELL 722      
510-266 1 Hayward CA 9740 PACIFIC BELL 722      
510-266 3 Hayward CA 9740 PACIFIC BELL 722      
510-266 4 Hayward CA 9740 PACIFIC BELL 722      
510-266 5 Hayward CA 9740 PACIFIC BELL 722      
510-266 6 Hayward CA 9740 PACIFIC BELL 722      
510-266 7 Hayward CA 9740 PACIFIC BELL 722      
510-293 A Hayward CA 9740 PACIFIC BELL 722      
510-293 0 Hayward CA 9740 PACIFIC BELL 722      
510-293 1 Hayward CA 9740 PACIFIC BELL 722      
510-293 2 Hayward CA 9740 PACIFIC BELL 722      
510-293 3 Hayward CA 9740 PACIFIC BELL 722      
510-293 4 Hayward CA 9740 PACIFIC BELL 722      
510-293 5 Hayward CA 9740 PACIFIC BELL 722      
510-293 7 Hayward CA 9740 PACIFIC BELL 722      
510-293 8 Hayward CA 9740 PACIFIC BELL 722      
510-293 9 Hayward CA 9740 PACIFIC BELL 722      
510-670 A Hayward CA 9740 PACIFIC BELL 722      
510-723 A Hayward CA 9740 PACIFIC BELL 722      
510-723 0 Hayward CA 9740 PACIFIC BELL 722      
510-723 1 Hayward CA 9740 PACIFIC BELL 722      
510-723 2 Hayward CA 9740 PACIFIC BELL 722      

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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