Local Calling Guide

Area code/prefix search

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

NXX: 830

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-830 A Mount Vernon OH MTVROHDD0MD  601G HORIZON SERVICES, INC. - OH 923      
740-830 1 Mount Vernon OH   601G HORIZON SERVICES, INC. - OH 923   2013-02-21   
740-830 2 Mount Vernon OH   624H ONVOY SPECTRUM, LLC 923   2021-11-15   
740-830 3 Mount Vernon OH   624H ONVOY SPECTRUM, LLC 923   2021-11-15   
740-830 6 Mount Vernon OH   547D TIME WARNER CABLE INFORMATION SVCS (OHIO) - OH 923   2015-09-28   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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