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: 583

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-583 A Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-583 0 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2010-12-16   
720-583 1 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2011-01-04   
720-583 2 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2011-01-04   
720-583 3 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-11-30   
720-583 4 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-11-30   
720-583 5 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-11-30   
720-583 6 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2011-01-04   
720-583 7 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2010-11-28   
720-583 8 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-12-16   
720-583 9 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-12-16   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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