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: LTFDTXXAPS0

Remotes:

Switch Switch name Switch type
SPDETXXARP0  SPADE  RP 
SPDETXXARS0  SPADE  DCL 
WTRLTXXARP0  WHITHARRAL  RP 
WTRLTXXARS0  WHITHARRAL  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
806-551 A Littlefield TX 1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 544      
806-551 9 Littlefield TX 1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 544   2016-09-26   

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

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