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: 719 [Rate centres in NPA 719] [Dial plan for NPA 719]

NXX: 931

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
719-931 A Lamar CO CLSPCOMAXWX  026D ONVOY, LLC - CO 658      
719-931 0 Lamar CO   026D ONVOY, LLC - CO 658   2019-05-10   
719-931 1 Lamar CO   026D ONVOY, LLC - CO 658   2012-12-16   
719-931 2 Lamar CO   6874 N.E. COLORADO CELLULAR, INC. 658   2018-12-26   
719-931 3 Lamar CO   6874 N.E. COLORADO CELLULAR, INC. 658   2015-12-11   
719-931 4 Lamar CO   6529 T-MOBILE USA, INC. 658   2021-02-28   
719-931 5 Lamar CO   026D ONVOY, LLC - CO 658   2012-12-16   
719-931 6 Lamar CO   508J CENTURYLINK COMMUNICATIONS, LLC 658   2014-11-05   
719-931 7 Lamar CO   5562 METROPCS, INC. 658   2017-08-24   
719-931 8 Lamar CO   026D ONVOY, LLC - CO 658   2010-12-19   
719-931 9 Lamar CO   026D ONVOY, LLC - CO 658   2012-12-16   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.