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: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-374 A Joplin TX JPLNTXXARS1  2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 552      
940-374 0 Joplin TX   2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 552      
940-374 2 Joplin TX   2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 552      
940-374 3 Joplin TX   2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 552      
940-374 4 Joplin TX   903C ONVOY, LLC - TX 552   2017-06-23   
940-374 5 Joplin TX   2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 552      
940-374 6 Joplin TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2006-10-07   
940-374 7 Joplin TX   508J CENTURYLINK COMMUNICATIONS, LLC 552   2014-05-19   
940-374 8 Joplin TX   903C ONVOY, LLC - TX 552   2021-03-18   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.