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: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-256 A Guyan OH MCVLOH25RS1  9321 OHIO BELL TEL CO 324      
740-256 0 Guyan OH   169H LOCAL ACCESS LLC - OH 324   2016-10-12   
740-256 1 Guyan OH   9321 OHIO BELL TEL CO 324      
740-256 2 Guyan OH   464C ONVOY, LLC - OH 324   2021-02-08   
740-256 3 Guyan OH   464C ONVOY, LLC - OH 324   2020-06-20   
740-256 4 Guyan OH   464C ONVOY, LLC - OH 324   2020-06-20   
740-256 5 Guyan OH   516C AT&T CORP. 324   2010-12-14   
740-256 6 Guyan OH   9321 OHIO BELL TEL CO 324      
740-256 7 Guyan OH   464C ONVOY, LLC - OH 324   2015-07-04   
740-256 8 Guyan OH   073H TELNYX LLC 324   2017-08-01   
740-256 9 Guyan OH   9321 OHIO BELL TEL CO 324      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.