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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-221 A Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-221 0 Richmond CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-221 1 Richmond CA OKLECAZVGT0  5562 METROPCS, INC. 722      
510-221 2 Richmond CA SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-221 3 Richmond CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-221 4 Richmond CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-221 5 Richmond CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
510-221 6 Richmond CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-221 7 Richmond CA SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
510-221 8 Richmond CA SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
510-221 9 Richmond CA   6529 T-MOBILE USA, INC. 722      

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

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