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: 492

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-492 A Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-492 0 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-10-10   
720-492 1 Denver CO   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2015-06-22   
720-492 2 Denver CO   6529 T-MOBILE USA, INC. 656   2015-07-03   
720-492 3 Denver CO   6529 T-MOBILE USA, INC. 656   2014-10-23   
720-492 4 Denver CO   6529 T-MOBILE USA, INC. 656   2014-10-09   
720-492 5 Denver CO   6529 T-MOBILE USA, INC. 656   2014-10-09   
720-492 6 Denver CO   6529 T-MOBILE USA, INC. 656   2014-10-09   
720-492 7 Denver CO   6529 T-MOBILE USA, INC. 656   2014-10-09   
720-492 8 Denver CO   6529 T-MOBILE USA, INC. 656   2014-10-09   
720-492 9 Denver CO   6529 T-MOBILE USA, INC. 656   2014-10-09   

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

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