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: 843

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-843 A Denver CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
720-843 0 Denver CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2021-12-23   
720-843 1 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-07-26   
720-843 2 Denver CO DNVRCO26XWX  616J LEAP TELECOM, LLC 656   2022-07-26   
720-843 3 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-07-26   
720-843 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-07-26   
720-843 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-07-26   
720-843 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-07-26   
720-843 7 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-07-26   
720-843 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-07-26   
720-843 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-07-26   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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