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: 665

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-665 A Gratiot OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
740-665 0 Gratiot OH CLMBOHLT7MD  073H TELNYX LLC 324   2021-03-12   
740-665 7 Gratiot OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2016-07-10   
740-665 8 Gratiot OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2016-07-10   

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.