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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-523 A Pleasanton CA PLTNCA13DS0  9740 PACIFIC BELL 722      
925-523 0 Pleasanton CA   649C ONVOY, LLC - CA 722   2012-12-30   
925-523 1 Pleasanton CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2010-11-20   
925-523 2 Pleasanton CA   206C FUSION COMMUNICATIONS, LLC 722   2012-05-10   
925-523 3 Pleasanton CA   7610 COMCAST PHONE OF CALIFORNIA, LLC - CA 722   2007-04-20   
925-523 4 Pleasanton CA   649C ONVOY, LLC - CA 722   2012-12-30   
925-523 5 Pleasanton CA   9740 PACIFIC BELL 722      
925-523 6 Pleasanton CA   649C ONVOY, LLC - CA 722   2012-12-30   
925-523 7 Pleasanton CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-11-10   
925-523 8 Pleasanton CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-10-27   
925-523 9 Pleasanton CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-12-20   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.