Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Portland, OH

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
740-843 A PTLDOHXARL0  0615 FRONTIER NORTH, INC. - OH 324      
740-843 0   225H CEBRIDGE TELECOM OH, LLC DBA SUDDENLINK COMM 324   2022-09-18   
740-843 1   0615 FRONTIER NORTH, INC. - OH 324      
740-843 2   516J TON80 COMMUNICATIONS, LLC 324   2021-09-07   
740-843 3   624H ONVOY SPECTRUM, LLC 324   2023-05-08   
740-843 4   464C ONVOY, LLC - OH 324   2021-03-11   
740-843 5   0615 FRONTIER NORTH, INC. - OH 324      
740-843 7   508J CENTURYLINK COMMUNICATIONS, LLC 324   2014-07-08   
740-843 8   464C ONVOY, LLC - OH 324   2019-06-07   
740-843 9   145J TERRA NOVA TELECOM INC. 324   2025-07-24   

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

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