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: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-231 A Duffy OH CLMDOHZI6MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 324      
740-231 0 Duffy OH   145J TERRA NOVA TELECOM INC. 324      
740-231 1 Duffy OH CLMDOHZI6MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 324      
740-231 2 Duffy OH CLMBOH11XLZ  001F BANDWIDTH.COM CLEC, LLC - OH 324      
740-231 3 Duffy OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
740-231 4 Duffy OH   624H ONVOY SPECTRUM, LLC 324      
740-231 5 Duffy OH CLMBOH11XLZ  001F BANDWIDTH.COM CLEC, LLC - OH 324      
740-231 6 Duffy OH CLMDOH448MD  073H TELNYX LLC 324      
740-231 7 Duffy OH CLMBOH1125Z  508J CENTURYLINK COMMUNICATIONS, LLC 324      
740-231 8 Duffy OH   515J IP HORIZON LLC 324      
740-231 9 Duffy OH CLMBOHLT7MD  073H TELNYX LLC 324      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.