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: SNRSCA010MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-340 2 Campbell CA 7421 AT&T - LOCAL 722   2003-06-23   
415-408 2 Novato CA 7421 AT&T - LOCAL 722   2003-08-25   
415-483 3 Ignacio CA 7421 AT&T - LOCAL 722   2005-09-17   
707-207 2 Fairfield-Suisun CA 7421 AT&T - LOCAL 722   2002-06-03   
707-227 3 Napa CA 7421 AT&T - LOCAL 722   2002-12-14   
707-236 A Santa Rosa CA 7421 AT&T - LOCAL 722      
707-236 1 Santa Rosa CA 7421 AT&T - LOCAL 722      
707-236 3 Santa Rosa CA 7421 AT&T - LOCAL 722      
707-236 9 Santa Rosa CA 7421 AT&T - LOCAL 722      
707-241 A Petaluma: Main DA CA 7421 AT&T - LOCAL 722      
707-241 2 Petaluma: Main DA CA 7421 AT&T - LOCAL 722   2002-11-27   
707-450 4 Vacaville CA 7421 AT&T - LOCAL 722   2004-04-02   
707-809 6 Middletown CA 7421 AT&T - LOCAL 722   2007-09-09   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.