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: 661

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-661 A Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 0 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 1 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 2 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 3 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 4 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 5 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 6 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      
303-661 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2015-07-23   
303-661 8 Denver CO DNVRCO26XLX  939H COMMIO, LLC 656   2024-03-25   
303-661 9 Denver CO DNVRCOCWDS0  9636 QWEST CORPORATION 656      

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

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