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.

NPA: 940 [Rate centres in NPA 940] [Dial plan for NPA 940]

NXX: 335

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-335 A Wichita Falls TX WCFLTXFGBMD  475J CALLWORKS CORPORATION 548      
940-335 0 Wichita Falls TX WCFLTXNIX6X  903C ONVOY, LLC - TX 548   2024-02-23   
940-335 1 Wichita Falls TX WCFLTXFGBMD  475J CALLWORKS CORPORATION 548   2022-05-05   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.