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: OKLDCA12DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
510-425 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-430 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-562 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-567 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-568 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-569 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-632 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-633 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-635 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-636 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-638 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-639 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      
510-729 A Oakland: Trinidad DA CA 9740 PACIFIC BELL 722      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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