Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 983 [Rate centres in NPA 983] [Dial plan for NPA 983]

NXX: 955

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
983-955 A Denver CO   907K ALLO COMMUNICATIONS LLC 656   2025-10-24   
983-955 0 Denver CO   026D ONVOY, LLC - CO 656   2025-10-27   
983-955 1 Denver CO   026D ONVOY, LLC - CO 656   2025-10-27   
983-955 2 Denver CO   026D ONVOY, LLC - CO 656   2025-10-27   
983-955 3 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-10-27   
983-955 4 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-10-27   
983-955 5 Denver CO   907K ALLO COMMUNICATIONS LLC 656   2025-10-24   
983-955 6 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-10-27   
983-955 7 Denver CO   026D ONVOY, LLC - CO 656   2025-10-27   
983-955 8 Denver CO   026D ONVOY, LLC - CO 656   2025-10-27   
983-955 9 Denver CO   026D ONVOY, LLC - CO 656   2025-10-27   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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