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: 288

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-288 A Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-288 0 Denver CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-04-29   
720-288 1 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-07-02   
720-288 2 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-08-23   
720-288 3 Denver CO   6529 T-MOBILE USA, INC. 656   2010-07-02   
720-288 4 Denver CO   6529 T-MOBILE USA, INC. 656   2010-07-02   
720-288 5 Denver CO   6529 T-MOBILE USA, INC. 656   2010-08-12   
720-288 6 Denver CO   6529 T-MOBILE USA, INC. 656   2010-08-12   
720-288 7 Denver CO   6529 T-MOBILE USA, INC. 656   2010-08-12   
720-288 8 Denver CO   6529 T-MOBILE USA, INC. 656   2010-07-02   
720-288 9 Denver CO   6529 T-MOBILE USA, INC. 656   2010-07-02   

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

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