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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-253 1 Richmond CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
510-253 2 Richmond CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-253 3 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-253 4 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-253 5 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-253 6 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-253 7 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-253 8 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-253 9 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.