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: LSANCAIODS0

Remotes:

Switch Switch name Switch type
LSANCAIKRS1  LOS ANGELES  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
213-740 A Los Angeles: DA 07 CA 7534 FRONTIER CALIFORNIA INC. 730      
213-764 A Los Angeles: DA 07 CA 7534 FRONTIER CALIFORNIA INC. 730      
213-821 A Los Angeles: DA 07 CA 7534 FRONTIER CALIFORNIA INC. 730      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.