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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-417 A El Sobrante-Pinole CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-417 0 El Sobrante-Pinole CA   6529 T-MOBILE USA, INC. 722      
510-417 1 El Sobrante-Pinole CA   6529 T-MOBILE USA, INC. 722   2005-08-18   
510-417 2 El Sobrante-Pinole CA   7610 COMCAST PHONE OF CALIFORNIA, LLC - CA 722   2007-07-16   
510-417 3 El Sobrante-Pinole CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-11-25   
510-417 4 El Sobrante-Pinole CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2004-01-13   
510-417 5 El Sobrante-Pinole CA   6529 T-MOBILE USA, INC. 722      
510-417 6 El Sobrante-Pinole CA   6529 T-MOBILE USA, INC. 722   2011-11-25   
510-417 7 El Sobrante-Pinole CA   6529 T-MOBILE USA, INC. 722   2013-07-24   
510-417 8 El Sobrante-Pinole CA   6529 T-MOBILE USA, INC. 722   2013-09-06   
510-417 9 El Sobrante-Pinole CA   6529 T-MOBILE USA, INC. 722      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.