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: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-454 A Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722      
510-454 0 Oakland: Trinidad DA CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-04-12   
510-454 1 Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722   2012-12-30   
510-454 2 Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722   2012-12-30   
510-454 3 Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722   2012-12-30   
510-454 4 Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722   2012-12-30   
510-454 5 Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722   2012-12-30   
510-454 6 Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722   2012-12-30   
510-454 7 Oakland: Trinidad DA CA SNLNCA11DS0  9740 PACIFIC BELL 722   2012-12-30   
510-454 8 Oakland: Trinidad DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-03-10   
510-454 9 Oakland: Trinidad DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2013-03-28   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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