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: ADLNCAXFDS0

Remotes:

Switch Switch name Switch type
BORNCAXFRS3  BORON  RSC 
CFCYCAXFRS5  CALIFORNIA CITY  RSC 
ELMGCAXFRS1  EL MIRAGE  RLC 
NEDWCAXFRS4  NORTH EDWARDS  RSC 
PHLNCAXFRS6  PHELAN  RSC 
WRWDCAXFRS8  WRIGHTWOOD  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-363 A Victorville: Adelanto DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-246 A Victorville: Adelanto DA CA 4420 FRONTIER CALIFORNIA INC. 730      
760-530 A Victorville: Adelanto DA CA 4420 FRONTIER CALIFORNIA INC. 730      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.