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: 478

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-478 A Richmond CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-478 0 Richmond CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-478 1 Richmond CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-478 2 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-478 3 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-478 4 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-478 5 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-478 6 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-478 7 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-478 8 Richmond CA   5562 METROPCS, INC. 722   2004-05-21   
510-478 9 Richmond CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-01-15   

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

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