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: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-512 A Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 0 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 1 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 2 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 3 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2006-03-26   
303-512 4 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 5 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 6 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 7 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 8 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
303-512 9 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      

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

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