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: 236

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
283-236 A Mason OH   464C ONVOY, LLC - OH 922   2026-06-28   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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