Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 720 [Rate centres in NPA 720] [Dial plan for NPA 720]

NXX: 719

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-719 A Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2024-06-07   
720-719 0 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2024-06-07   
720-719 1 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2024-06-07   
720-719 2 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2024-06-07   
720-719 3 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2024-06-07   
720-719 4 Denver CO   732J NUSO, LLC 656   2024-08-02   
720-719 5 Denver CO   026D ONVOY, LLC - CO 656   2024-06-08   
720-719 6 Denver CO   026D ONVOY, LLC - CO 656   2024-06-08   
720-719 7 Denver CO   026D ONVOY, LLC - CO 656   2024-06-08   
720-719 8 Denver CO   026D ONVOY, LLC - CO 656   2024-06-08   
720-719 9 Denver CO   026D ONVOY, LLC - CO 656   2024-06-08   

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

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