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: 943

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-943 A Denver CO DNVRCOMA49Z  622J SKYE TELECOM LLC DBA SKYETEL 656      
303-943 0 Denver CO   622J SKYE TELECOM LLC DBA SKYETEL 656   2021-11-08   
303-943 1 Denver CO   026D ONVOY, LLC - CO 656   2021-11-09   
303-943 2 Denver CO   624H ONVOY SPECTRUM, LLC 656   2021-11-09   
303-943 3 Denver CO   5562 METROPCS, INC. 656   2021-11-09   
303-943 4 Denver CO   5562 METROPCS, INC. 656   2021-11-09   
303-943 5 Denver CO   624H ONVOY SPECTRUM, LLC 656   2021-11-09   
303-943 6 Denver CO   624H ONVOY SPECTRUM, LLC 656   2021-11-09   
303-943 7 Denver CO   624H ONVOY SPECTRUM, LLC 656   2021-11-09   
303-943 8 Denver CO   624H ONVOY SPECTRUM, LLC 656   2021-11-09   
303-943 9 Denver CO   026D ONVOY, LLC - CO 656   2021-11-09   

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

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