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: 800

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-800 A Denton TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
940-800 0 Denton TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2017-12-02   
940-800 1 Denton TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2017-12-03   
940-800 2 Denton TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2017-12-03   
940-800 3 Denton TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2018-11-01   
940-800 4 Denton TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 552   2018-02-23   
940-800 5 Denton TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 552   2018-02-23   
940-800 6 Denton TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 552   2018-02-23   
940-800 7 Denton TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 552   2018-02-23   
940-800 8 Denton TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2017-12-02   
940-800 9 Denton TX   997G LOCAL ACCESS LLC - TX 552   2017-12-15   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.