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: 253

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-253 A Richmond CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
510-253 0 Richmond CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-02-12   
510-253 1 Richmond CA   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
510-253 2 Richmond CA   649C ONVOY, LLC - CA 722   2005-03-14   
510-253 3 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-253 4 Richmond CA   5562 METROPCS, INC. 722   2008-11-24   
510-253 5 Richmond CA   5562 METROPCS, INC. 722   2003-02-08   
510-253 6 Richmond CA   5562 METROPCS, INC. 722   2003-02-08   
510-253 7 Richmond CA   5562 METROPCS, INC. 722   2003-02-08   
510-253 8 Richmond CA   5562 METROPCS, INC. 722   2003-02-08   
510-253 9 Richmond CA   5562 METROPCS, INC. 722   2003-02-08   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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