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: 304

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-304 A Denver CO TEMACOMADS0  9636 QWEST CORPORATION 656      
720-304 0 Denver CO   9636 QWEST CORPORATION 656      
720-304 1 Denver CO   9636 QWEST CORPORATION 656      
720-304 2 Denver CO   9636 QWEST CORPORATION 656      
720-304 3 Denver CO   9636 QWEST CORPORATION 656      
720-304 4 Denver CO   9636 QWEST CORPORATION 656      
720-304 5 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2006-03-06   
720-304 6 Denver CO   9636 QWEST CORPORATION 656      
720-304 7 Denver CO   9636 QWEST CORPORATION 656      
720-304 8 Denver CO   9636 QWEST CORPORATION 656      
720-304 9 Denver CO   9636 QWEST CORPORATION 656      

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

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