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: 580

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-580 A Keenesburg CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-580 0 Keenesburg CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2013-05-16   
720-580 1 Keenesburg CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-04-14   
720-580 2 Keenesburg CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-04-14   
720-580 3 Keenesburg CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-04-14   
720-580 4 Keenesburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2014-10-07   
720-580 5 Keenesburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2014-10-07   
720-580 6 Keenesburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2014-09-07   
720-580 7 Keenesburg CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-05-23   
720-580 8 Keenesburg CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-05-17   
720-580 9 Keenesburg CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-05-17   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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