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: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-240 A East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 0 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 1 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 2 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 3 East Contra Costa CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-03-04   
925-240 4 East Contra Costa CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2012-12-13   
925-240 5 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 6 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 7 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 8 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      
925-240 9 East Contra Costa CA BRWDCA12DS0  9740 PACIFIC BELL 722      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.