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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-223 A Vernon TX WCFLTXFGEMD  732J NUSO, LLC 548      
940-223 0 Vernon TX WCFLTXNIX6X  903C ONVOY, LLC - TX 548   2023-08-06   
940-223 1 Vernon TX WCFLTXFGEMD  732J NUSO, LLC 548   2023-04-09   
940-223 2 Vernon TX WCFLTXFGEMD  732J NUSO, LLC 548   2023-11-25   
940-223 3 Vernon TX WCFLTXFGEMD  732J NUSO, LLC 548   2023-11-25   
940-223 4 Vernon TX WCFLTXNIX6X  903C ONVOY, LLC - TX 548   2024-04-05   
940-223 5 Vernon TX WCFLTXFGHMD  318C CEBRIDGE TELECOM TX , L.P. - TX 548   2024-05-12   
940-223 6 Vernon TX WCFLTXNIXLX  624H ONVOY SPECTRUM, LLC 548   2024-05-03   
940-223 7 Vernon TX WCFLTXNIX6X  903C ONVOY, LLC - TX 548   2024-05-24   
940-223 8 Vernon TX WCFLTXNIXPX  515J IP HORIZON LLC 548   2023-12-28   
940-223 9 Vernon TX WCFLTXNIXPX  515J IP HORIZON LLC 548   2023-12-28   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.