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: 379

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-379 A Walnut OH PATROH37RS1  9321 OHIO BELL TEL CO 324      
740-379 0 Walnut OH   284F PEERLESS NETWORK OF OHIO, LLC - OH 324   2016-10-15   
740-379 2 Walnut OH   9321 OHIO BELL TEL CO 324      
740-379 3 Walnut OH   464C ONVOY, LLC - OH 324   2015-02-06   
740-379 4 Walnut OH   464C ONVOY, LLC - OH 324   2018-09-14   
740-379 5 Walnut OH   464C ONVOY, LLC - OH 324   2015-07-04   
740-379 6 Walnut OH   508J CENTURYLINK COMMUNICATIONS, LLC 324   2014-07-07   
740-379 7 Walnut OH   036B CITYNET OHIO, LLC - OH 324   2008-07-06   
740-379 8 Walnut OH   515J IP HORIZON LLC 324   2016-10-12   
740-379 9 Walnut OH   9321 OHIO BELL TEL CO 324      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.