Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

NXX: 567

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-567 A Oakland: Trinidad DA CA OKLDCA12DS1  9740 PACIFIC BELL 722      
510-567 0 Oakland: Trinidad DA CA   9740 PACIFIC BELL 722      
510-567 1 Oakland: Trinidad DA CA   9740 PACIFIC BELL 722      
510-567 2 Oakland: Trinidad DA CA   9740 PACIFIC BELL 722      
510-567 3 Oakland: Trinidad DA CA   516C AT&T CORP. 722   2010-07-06   
510-567 4 Oakland: Trinidad DA CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2004-01-13   
510-567 5 Oakland: Trinidad DA CA   9740 PACIFIC BELL 722      
510-567 6 Oakland: Trinidad DA CA   9740 PACIFIC BELL 722      
510-567 7 Oakland: Trinidad DA CA   649C ONVOY, LLC - CA 722   2007-09-07   
510-567 8 Oakland: Trinidad DA CA   9740 PACIFIC BELL 722      
510-567 9 Oakland: Trinidad DA CA   9740 PACIFIC BELL 722      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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