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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
283-300 A Middletown OH   490J BOOST SUBSCRIBERCO L.L.C. 328   2026-03-21   
283-300 0 Middletown OH   490J BOOST SUBSCRIBERCO L.L.C. 328   2026-03-21   
283-300 1 Middletown OH   490J BOOST SUBSCRIBERCO L.L.C. 328   2026-05-21   
283-300 2 Middletown OH   490J BOOST SUBSCRIBERCO L.L.C. 328   2026-06-20   
283-300 3 Middletown OH   490J BOOST SUBSCRIBERCO L.L.C. 328   2026-07-20   
283-300 8 Middletown OH   464C ONVOY, LLC - OH 328   2026-03-23   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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