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: 502

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-502 A Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-502 0 Denver CO   026D ONVOY, LLC - CO 656   2013-01-15   
720-502 1 Denver CO   026D ONVOY, LLC - CO 656   2013-01-15   
720-502 2 Denver CO   318J COMCAST IP PHONE, LLC 656   2013-01-12   
720-502 3 Denver CO   318J COMCAST IP PHONE, LLC 656   2013-01-15   
720-502 4 Denver CO   318J COMCAST IP PHONE, LLC 656   2013-01-15   
720-502 5 Denver CO   318J COMCAST IP PHONE, LLC 656   2013-01-15   
720-502 6 Denver CO   318J COMCAST IP PHONE, LLC 656   2013-01-15   
720-502 7 Denver CO   318J COMCAST IP PHONE, LLC 656   2013-01-15   
720-502 8 Denver CO   026D ONVOY, LLC - CO 656   2013-01-15   
720-502 9 Denver CO   026D ONVOY, LLC - CO 656   2013-01-15   

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

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