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: DRRSCAABDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-319 A Redding CA 734E CAL-ORE COMMUNICATIONS, INC. - CA 724      
530-397 A Dorris CA 2311 CAL-ORE TELEPHONE CO. 724      
530-398 A MacDoel CA 2311 CAL-ORE TELEPHONE CO. 724      
530-664 A Newell CA 2311 CAL-ORE TELEPHONE CO. 724      
530-667 A Tulelake CA 2311 CAL-ORE TELEPHONE CO. 724      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.