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: 224

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-224 A Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-224 0 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-03-17   
720-224 1 Denver CO   6529 T-MOBILE USA, INC. 656   2005-06-25   
720-224 2 Denver CO   6529 T-MOBILE USA, INC. 656   2005-08-29   
720-224 3 Denver CO   6529 T-MOBILE USA, INC. 656   2005-08-29   
720-224 4 Denver CO   6529 T-MOBILE USA, INC. 656   2005-08-29   
720-224 5 Denver CO   6529 T-MOBILE USA, INC. 656   2005-08-29   
720-224 6 Denver CO   6529 T-MOBILE USA, INC. 656   2005-08-29   
720-224 7 Denver CO   6529 T-MOBILE USA, INC. 656   2005-08-29   
720-224 8 Denver CO   6529 T-MOBILE USA, INC. 656   2005-08-29   
720-224 9 Denver CO   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      

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

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