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: 573

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-573 A Arabia OH CLMDOH44VMD  829J PAETEC ITEL, LLC 324      
740-573 0 Arabia OH   793K TWC IP ENABLED SERVICES, LLC 324   2024-02-11   
740-573 1 Arabia OH   939H COMMIO, LLC 324   2022-09-10   
740-573 2 Arabia OH   024E ARMSTRONG TELECOMMUNICATIONS, INC. - OH 324   2008-10-19   
740-573 3 Arabia OH   464C ONVOY, LLC - OH 324   2015-07-03   
740-573 4 Arabia OH   829J PAETEC ITEL, LLC 324   2004-03-15   
740-573 5 Arabia OH   001F BANDWIDTH.COM CLEC, LLC - OH 324   2013-04-29   
740-573 6 Arabia OH   516C AT&T CORP. 324   2010-12-14   
740-573 7 Arabia OH   464C ONVOY, LLC - OH 324   2012-10-13   
740-573 8 Arabia OH   515J IP HORIZON LLC 324   2016-09-23   
740-573 9 Arabia OH   001F BANDWIDTH.COM CLEC, LLC - OH 324   2009-01-04   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.