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: 306

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-306 A Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-306 0 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-03-20   
720-306 1 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-04-29   
720-306 2 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2006-11-19   
720-306 3 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2006-11-19   
720-306 4 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2008-02-25   
720-306 5 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2008-02-25   
720-306 6 Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-306 7 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2008-10-24   
720-306 8 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-07-25   
720-306 9 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2013-04-07   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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