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
925-520 A Pleasanton CA PLTNCA13DS0  9740 PACIFIC BELL 722      
925-520 0 Pleasanton CA   9740 PACIFIC BELL 722      
925-520 1 Pleasanton CA   9740 PACIFIC BELL 722      
925-520 2 Pleasanton CA   7262 XO CALIFORNIA, INC. 722   2005-09-22   
925-520 3 Pleasanton CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2016-07-29   
925-520 4 Pleasanton CA   7262 XO CALIFORNIA, INC. 722   2005-09-22   
925-520 5 Pleasanton CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-05-06   
925-520 6 Pleasanton CA   9740 PACIFIC BELL 722      
925-520 7 Pleasanton CA   9740 PACIFIC BELL 722      
925-520 8 Pleasanton CA   9740 PACIFIC BELL 722      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.