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: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-999 A Denton TX DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
940-999 0 Denton TX DLLSTXJFDMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2014-10-05   
940-999 1 Denton TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-10-06   
940-999 2 Denton TX DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552   2014-10-06   
940-999 3 Denton TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-11-09   
940-999 4 Denton TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-11-09   
940-999 5 Denton TX DLLSTXHM4MD  7409 MCLEODUSA TELECOMMUNICATION SERVICES, INC. - TX 552   2014-08-19   
940-999 6 Denton TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2014-11-09   
940-999 7 Denton TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2015-01-04   
940-999 8 Denton TX DLLTTX01HMD  6529 T-MOBILE USA, INC. 552   2016-04-03   
940-999 9 Denton TX DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552   2014-07-12   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.