Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 843

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-843 A Portland OH PTLDOHXARL0  0615 FRONTIER NORTH, INC. - OH 324      
740-843 0 Portland OH ATHNOHXADMD  225H CEBRIDGE TELECOM OH, LLC DBA SUDDENLINK COMM 324   2022-09-18   
740-843 1 Portland OH PTLDOHXARL0  0615 FRONTIER NORTH, INC. - OH 324      
740-843 2 Portland OH CLMDOH44MMD  516J TON80 COMMUNICATIONS, LLC 324   2021-09-07   
740-843 3 Portland OH ATHNOHXAMMD  624H ONVOY SPECTRUM, LLC 324   2023-05-08   
740-843 4 Portland OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-03-11   
740-843 5 Portland OH PTLDOHXARL0  0615 FRONTIER NORTH, INC. - OH 324      
740-843 7 Portland OH CLMBOH1125Z  508J CENTURYLINK COMMUNICATIONS, LLC 324   2014-07-08   
740-843 8 Portland OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2019-06-07   
740-843 9 Portland OH   145J TERRA NOVA TELECOM INC. 324   2025-07-24   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.