Local Calling Guide

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

NXX: 351

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-351 A Portsmouth OH PTMOOHXADS0  0615 FRONTIER NORTH, INC. - OH 324      
740-351 0 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-351 1 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-351 2 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-351 3 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-351 4 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-351 5 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-351 6 Portsmouth OH   0615 FRONTIER NORTH, INC. - OH 324      
740-351 7 Portsmouth OH   464C ONVOY, LLC - OH 324   2021-01-01   
740-351 8 Portsmouth OH   464C ONVOY, LLC - OH 324   2023-09-16   
740-351 9 Portsmouth OH   515J IP HORIZON LLC 324   2013-09-06   

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

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