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   
283-239 7 Middletown OH   9557 INTRADO COMMUNICATIONS, LLC 328   2026-11-15   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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