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: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
719-399 A Aguilar CO CLSPCOMAXMX  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 658      
719-399 0 Aguilar CO   078F BANDWIDTH.COM CLEC, LLC - CO 658   2014-05-22   
719-399 1 Aguilar CO   026D ONVOY, LLC - CO 658   2014-07-27   
719-399 2 Aguilar CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 658   2014-05-17   
719-399 3 Aguilar CO   078F BANDWIDTH.COM CLEC, LLC - CO 658   2015-05-10   
719-399 4 Aguilar CO   026D ONVOY, LLC - CO 658   2016-03-28   
719-399 5 Aguilar CO   026D ONVOY, LLC - CO 658   2016-03-28   
719-399 6 Aguilar CO   026D ONVOY, LLC - CO 658   2019-09-09   
719-399 7 Aguilar CO   508J CENTURYLINK COMMUNICATIONS, LLC 658   2014-05-22   
719-399 8 Aguilar CO   073H TELNYX LLC 658   2018-05-02   
719-399 9 Aguilar CO   026D ONVOY, LLC - CO 658   2019-09-09   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.