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: 681

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-681 A Denver CO LRKSCONMRS1  9636 QWEST CORPORATION 656      
303-681 0 Denver CO   9636 QWEST CORPORATION 656      
303-681 1 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-02-28   
303-681 2 Denver CO   9636 QWEST CORPORATION 656      
303-681 3 Denver CO   9636 QWEST CORPORATION 656      
303-681 4 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-02-28   
303-681 5 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-03-05   
303-681 6 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-03-05   
303-681 7 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2006-03-09   
303-681 8 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-03-05   
303-681 9 Denver CO   9636 QWEST CORPORATION 656      

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

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