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: 743 [Rate centres in NPA 743] [Dial plan for NPA 743]

NXX: 212

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
743-212 A Mount Airy NC GNBONCEU27Z  998E BANDWIDTH.COM CLEC, LLC - NC 424      
743-212 0 Mount Airy NC   998E BANDWIDTH.COM CLEC, LLC - NC 424   2019-09-06   
743-212 1 Mount Airy NC   073H TELNYX LLC 424   2021-02-27   
743-212 2 Mount Airy NC   638E ONVOY, LLC - NC 424   2020-07-10   
743-212 3 Mount Airy NC   638E ONVOY, LLC - NC 424   2020-07-10   
743-212 4 Mount Airy NC   638E ONVOY, LLC - NC 424   2021-03-28   
743-212 5 Mount Airy NC   638E ONVOY, LLC - NC 424   2021-03-28   
743-212 6 Mount Airy NC   638E ONVOY, LLC - NC 424   2021-03-28   
743-212 7 Mount Airy NC   638E ONVOY, LLC - NC 424   2019-09-07   
743-212 8 Mount Airy NC   638E ONVOY, LLC - NC 424   2019-09-07   
743-212 9 Mount Airy NC   638E ONVOY, LLC - NC 424   2021-03-28   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.