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: 835

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-835 A Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-835 0 Denver CO   026D ONVOY, LLC - CO 656   2016-01-22   
720-835 1 Denver CO   026D ONVOY, LLC - CO 656   2016-03-21   
720-835 2 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2016-07-14   
720-835 3 Denver CO   321J HD CARRIER LLC 656   2016-09-01   
720-835 4 Denver CO   321J HD CARRIER LLC 656   2016-09-01   
720-835 5 Denver CO   321J HD CARRIER LLC 656   2016-09-01   
720-835 6 Denver CO   321J HD CARRIER LLC 656   2016-09-01   
720-835 7 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2016-07-02   
720-835 8 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2016-03-04   
720-835 9 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-09   

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

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