Local Calling Guide

Area code/prefix search

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

NXX: 372

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-372 A Portsmouth OH OTWYOHXBRS0  0615 FRONTIER NORTH, INC. - OH 324      
740-372 0 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-372 1 Portsmouth OH   624H ONVOY SPECTRUM, LLC 324   2022-11-11   
740-372 2 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-372 3 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-372 4 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-372 5 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-372 6 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-372 7 Portsmouth OH   516J TON80 COMMUNICATIONS, LLC 324   2021-09-25   
740-372 8 Portsmouth OH   624H ONVOY SPECTRUM, LLC 324   2022-11-11   
740-372 9 Portsmouth OH   624H ONVOY SPECTRUM, LLC 324   2022-11-11   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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