Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 740 [Rate centres in NPA 740] [Dial plan for NPA 740]

NXX: 371

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-371 A Marietta OH   612K CSC VOICE, LLC 324      
740-371 0 Marietta OH HLRDOHEJGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324   2016-02-07   
740-371 1 Marietta OH   515J IP HORIZON LLC 324   2016-10-12   
740-371 2 Marietta OH CLMKOHPE0MD  793K TWC IP ENABLED SERVICES, LLC 324   2022-04-17   
740-371 3 Marietta OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2016-04-11   
740-371 4 Marietta OH   612K CSC VOICE, LLC 324   2014-01-05   
740-371 5 Marietta OH   612K CSC VOICE, LLC 324   2014-01-05   
740-371 6 Marietta OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2016-04-11   
740-371 7 Marietta OH BLPROH420MD  380H CAS COMMUNICATIONS, LLC - OH 324   2018-01-05   
740-371 8 Marietta OH CLMDOH448MD  073H TELNYX LLC 324   2017-06-01   
740-371 9 Marietta OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-03-11   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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