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: CHNOCAXF62J

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
909-364 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-464 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-465 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-517 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-548 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-590 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-591 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-613 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-627 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-628 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      
909-902 A Chino CA 2319 FRONTIER CALIFORNIA INC. 730      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.