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: WLANCAXJDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
310-206 A West Los Angeles CA 2319 FRONTIER CALIFORNIA INC. 730      
310-208 A West Los Angeles CA 2319 FRONTIER CALIFORNIA INC. 730      
310-209 A West Los Angeles CA 2319 FRONTIER CALIFORNIA INC. 730      
310-443 A West Los Angeles CA 2319 FRONTIER CALIFORNIA INC. 730      
310-794 A West Los Angeles CA 2319 FRONTIER CALIFORNIA INC. 730      
310-824 A West Los Angeles CA 2319 FRONTIER CALIFORNIA INC. 730      
310-825 A West Los Angeles CA 2319 FRONTIER CALIFORNIA INC. 730      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.