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: 901

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-901 A Denver CO DNVTCOZI6MD  073H TELNYX LLC 656      
720-901 0 Denver CO   073H TELNYX LLC 656   2022-01-15   
720-901 1 Denver CO   073H TELNYX LLC 656   2022-01-15   
720-901 2 Denver CO   026D ONVOY, LLC - CO 656   2022-01-17   
720-901 3 Denver CO   026D ONVOY, LLC - CO 656   2022-01-17   
720-901 4 Denver CO   026D ONVOY, LLC - CO 656   2022-01-17   
720-901 5 Denver CO   026D ONVOY, LLC - CO 656   2022-01-17   
720-901 6 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-05   
720-901 7 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-05   
720-901 8 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-05   
720-901 9 Denver CO   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2022-01-16   

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

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