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: 277

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
983-277 A Denver CO   824J OPENTACT INC. 656   2026-03-09   
983-277 0 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-03-10   
983-277 1 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-03-10   
983-277 2 Denver CO   026D ONVOY, LLC - CO 656   2026-03-10   
983-277 3 Denver CO   026D ONVOY, LLC - CO 656   2026-03-10   
983-277 4 Denver CO   824J OPENTACT INC. 656   2026-03-09   
983-277 5 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-03-14   
983-277 6 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-03-14   
983-277 7 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-03-23   
983-277 8 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-03-10   
983-277 9 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2026-03-10   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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