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: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-251 A Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-251 0 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-02   
720-251 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-06-10   
720-251 2 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2004-09-18   
720-251 3 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-02   
720-251 4 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-251 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-03-05   
720-251 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-08-06   
720-251 7 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2006-07-09   
720-251 8 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2006-07-09   
720-251 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-08-06   

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

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