Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 303 [Rate centres in NPA 303] [Dial plan for NPA 303]

NXX: 219

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-219 A Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
303-219 0 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
303-219 1 Denver CO   026D ONVOY, LLC - CO 656   2006-01-29   
303-219 2 Denver CO   026D ONVOY, LLC - CO 656   2012-10-27   
303-219 3 Denver CO   026D ONVOY, LLC - CO 656   2009-02-09   
303-219 4 Denver CO   026D ONVOY, LLC - CO 656   2009-03-23   
303-219 5 Denver CO   3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2010-01-02   
303-219 6 Denver CO   026D ONVOY, LLC - CO 656   2009-03-23   
303-219 7 Denver CO   026D ONVOY, LLC - CO 656   2006-11-04   
303-219 8 Denver CO   026D ONVOY, LLC - CO 656   2012-10-27   
303-219 9 Denver CO   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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