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: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 508

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-508 A East Contra Costa CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
925-508 0 East Contra Costa CA   649C ONVOY, LLC - CA 722      
925-508 1 East Contra Costa CA   649C ONVOY, LLC - CA 722      
925-508 2 East Contra Costa CA   649C ONVOY, LLC - CA 722      
925-508 3 East Contra Costa CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
925-508 8 East Contra Costa CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-508 9 East Contra Costa CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.