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: IDALTXXAPS0

Remotes:

Switch Switch name Switch type
IDALTXXARP0    RP 
LRNZTXXARP0  LORENZO  RP 
LRNZTXXARS0  LORENZO  1RE 
PTBGTXXARP0  PETERSBURG  RP 
PTBGTXXARS0  PETERSBURG  1RE 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
806-581 A Idalou TX 1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 544      
806-581 9 Idalou TX 1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 544   2017-12-28   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.