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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
983-223 A Longmont CO   026D ONVOY, LLC - CO 656   2026-03-20   
983-223 0 Longmont CO   026D ONVOY, LLC - CO 656   2026-03-20   
983-223 1 Longmont CO   026D ONVOY, LLC - CO 656   2026-03-20   
983-223 2 Longmont CO   026D ONVOY, LLC - CO 656   2026-03-20   
983-223 3 Longmont CO   026D ONVOY, LLC - CO 656   2026-03-20   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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