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: 636

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-636 A Denver CO DNVRCOSLDS0  9636 QWEST CORPORATION 656      
303-636 0 Denver CO   9636 QWEST CORPORATION 656      
303-636 1 Denver CO   9636 QWEST CORPORATION 656      
303-636 2 Denver CO   9636 QWEST CORPORATION 656      
303-636 3 Denver CO   9636 QWEST CORPORATION 656      
303-636 4 Denver CO   9636 QWEST CORPORATION 656      
303-636 5 Denver CO   9636 QWEST CORPORATION 656      
303-636 6 Denver CO   9636 QWEST CORPORATION 656      
303-636 7 Denver CO   508J CENTURYLINK COMMUNICATIONS, LLC 656      
303-636 8 Denver CO   9636 QWEST CORPORATION 656      
303-636 9 Denver CO   9636 QWEST CORPORATION 656      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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