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: 310

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-310 A Allens Park-Lyons CO AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-310 0 Allens Park-Lyons CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-02-19   
720-310 1 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-01-29   
720-310 2 Allens Park-Lyons CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2006-12-09   
720-310 3 Allens Park-Lyons CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2019-11-16   
720-310 4 Allens Park-Lyons CO AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-310 5 Allens Park-Lyons CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
720-310 6 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-10-03   
720-310 7 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-11-04   
720-310 8 Allens Park-Lyons CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-11-15   
720-310 9 Allens Park-Lyons CO DNVTCO56AMD  8465 GLOBAL CROSSING LOCAL SERVICES, INC. - CO 656   2011-01-03   

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

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