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: 356

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
719-356 A Burlington CO CLSPCOMAXWX  026D ONVOY, LLC - CO 658      
719-356 0 Burlington CO   6010 NEW CINGULAR WIRELESS PCS, LLC 658   2010-11-04   
719-356 1 Burlington CO   026D ONVOY, LLC - CO 658   2012-12-14   
719-356 2 Burlington CO   026D ONVOY, LLC - CO 658   2012-12-14   
719-356 3 Burlington CO   026D ONVOY, LLC - CO 658   2012-12-14   
719-356 4 Burlington CO   026D ONVOY, LLC - CO 658   2012-12-14   
719-356 5 Burlington CO   026D ONVOY, LLC - CO 658   2012-12-14   
719-356 6 Burlington CO   026D ONVOY, LLC - CO 658   2020-08-08   
719-356 7 Burlington CO   026D ONVOY, LLC - CO 658   2007-09-02   
719-356 8 Burlington CO   026D ONVOY, LLC - CO 658   2020-10-26   
719-356 9 Burlington CO   078F BANDWIDTH.COM CLEC, LLC - CO 658   2025-12-06   

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.