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: 408

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-408 A El Sobrante-Pinole CA HRCLCA11DS0  9740 PACIFIC BELL 722      
510-408 0 El Sobrante-Pinole CA HRCLCA11DS0  9740 PACIFIC BELL 722      
510-408 1 El Sobrante-Pinole CA HRCLCA11DS0  9740 PACIFIC BELL 722      
510-408 2 El Sobrante-Pinole CA HRCLCA11DS0  9740 PACIFIC BELL 722      
510-408 3 El Sobrante-Pinole CA HRCLCA11DS0  9740 PACIFIC BELL 722      
510-408 4 El Sobrante-Pinole CA HRCLCA11DS0  9740 PACIFIC BELL 722      
510-408 5 El Sobrante-Pinole CA HRCLCA11DS0  9740 PACIFIC BELL 722      
510-408 6 El Sobrante-Pinole CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-408 7 El Sobrante-Pinole CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-408 8 El Sobrante-Pinole CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-408 9 El Sobrante-Pinole CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.