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: BKLYCA01DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-204 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-229 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-486 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-540 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-548 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-549 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-644 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-841 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-843 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-849 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      
510-883 A Oakland: Berkeley DA CA 9740 PACIFIC BELL 722      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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