Local Calling Guide

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

NXX: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-528 A Green Camp OH GRCMOHXARL0  0615 FRONTIER NORTH, INC. - OH 324      
740-528 0 Green Camp OH   073H TELNYX LLC 324   2021-01-22   
740-528 1 Green Camp OH   624H ONVOY SPECTRUM, LLC 324   2023-05-08   
740-528 2 Green Camp OH   0615 FRONTIER NORTH, INC. - OH 324      
740-528 4 Green Camp OH   464C ONVOY, LLC - OH 324   2021-03-11   
740-528 5 Green Camp OH   464C ONVOY, LLC - OH 324   2018-09-20   
740-528 6 Green Camp OH   793K TWC IP ENABLED SERVICES, LLC 324   2007-06-28   
740-528 7 Green Camp OH   508J CENTURYLINK COMMUNICATIONS, LLC 324   2014-07-08   
740-528 8 Green Camp OH   464C ONVOY, LLC - OH 324   2021-04-13   
740-528 9 Green Camp OH   145J TERRA NOVA TELECOM INC. 324   2025-07-19   

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

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