Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 303 [Rate centres in NPA 303] [Dial plan for NPA 303]

NXX: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-401 A Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 0 Denver CO DNVRCO26XLX  939H COMMIO, LLC 656   2024-03-25   
303-401 1 Denver CO DNVRCO26XLX  939H COMMIO, LLC 656   2024-03-25   
303-401 2 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 3 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 4 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 5 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 6 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 7 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 8 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      
303-401 9 Denver CO BLDRCOMADS0  9636 QWEST CORPORATION 656      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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