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: 585

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-585 A Denver CO   6529 T-MOBILE USA, INC. 656      
720-585 0 Denver CO   641H TDS BROADBAND SERVICE LLC 656   2025-11-03   
720-585 1 Denver CO   6529 T-MOBILE USA, INC. 656   2012-12-18   
720-585 2 Denver CO   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2012-12-18   
720-585 3 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2024-09-19   
720-585 4 Denver CO   6529 T-MOBILE USA, INC. 656   2012-12-18   
720-585 5 Denver CO   6529 T-MOBILE USA, INC. 656   2012-12-18   
720-585 6 Denver CO   6529 T-MOBILE USA, INC. 656   2012-12-18   
720-585 7 Denver CO   6529 T-MOBILE USA, INC. 656   2012-12-18   
720-585 8 Denver CO   6529 T-MOBILE USA, INC. 656   2012-12-18   
720-585 9 Denver CO   6529 T-MOBILE USA, INC. 656   2012-12-18   

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

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