Local Calling Guide

Area code/prefix search

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NPA: 740 [Rate centres in NPA 740] [Dial plan for NPA 740]

NXX: 451

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-451 A Chesapeake OH PTMOOHXADMD  024E ARMSTRONG TELECOMMUNICATIONS, INC. - OH 324      

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

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