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: 202

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
983-202 A Denver CO PGSPCO290MD  0051 SHELCOMM 656   2024-03-15   

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

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