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.

Switch: ORNDCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
925-253 A Orinda CA 9740 PACIFIC BELL 722      
925-254 A Orinda CA 9740 PACIFIC BELL 722      
925-258 A Orinda CA 9740 PACIFIC BELL 722      
925-258 0 Orinda CA 9740 PACIFIC BELL 722      
925-258 1 Orinda CA 9740 PACIFIC BELL 722      
925-258 3 Orinda CA 9740 PACIFIC BELL 722      
925-258 4 Orinda CA 9740 PACIFIC BELL 722      
925-258 6 Orinda CA 9740 PACIFIC BELL 722      
925-258 9 Orinda CA 9740 PACIFIC BELL 722      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.