Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-803 A Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
303-803 1 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
303-803 9 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
303-834 4 Longmont CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2008-05-31   
720-225 1 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2003-01-11   
720-225 2 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2003-01-11   
720-225 3 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2003-01-11   
720-225 4 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2003-01-11   
720-225 5 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2003-01-11   
720-225 6 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2003-01-11   
720-278 A Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-278 2 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-279 6 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2002-07-09   
720-305 A Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-305 0 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-475 8 Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2007-09-13   
720-754 A Denver CO 4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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