Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 283 [Rate centres in NPA 283] [Dial plan for NPA 283]

NXX: 239

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
283-239 A Middletown OH   464C ONVOY, LLC - OH 328   2026-10-17   
283-239 0 Middletown OH   464C ONVOY, LLC - OH 328   2026-10-17   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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