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: 701 [Rate centres in NPA 701] [Dial plan for NPA 701]

NXX: 645

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
701-645 A Leonard ND LNRDNDMWRS6  9631 QWEST CORPORATION 636      
701-645 0 Leonard ND   9631 QWEST CORPORATION 636      
701-645 1 Leonard ND   999E BANDWIDTH.COM CLEC, LLC - ND 636   2008-11-28   
701-645 2 Leonard ND   9631 QWEST CORPORATION 636      
701-645 3 Leonard ND   999E BANDWIDTH.COM CLEC, LLC - ND 636   2012-06-04   
701-645 4 Leonard ND   452F ONVOY, LLC - ND 636   2012-12-31   
701-645 5 Leonard ND   452F ONVOY, LLC - ND 636   2012-09-26   
701-645 6 Leonard ND   452F ONVOY, LLC - ND 636   2011-10-29   
701-645 7 Leonard ND   452F ONVOY, LLC - ND 636   2007-03-12   
701-645 8 Leonard ND   145J TERRA NOVA TELECOM INC. 636   2025-04-15   
701-645 9 Leonard ND   8054 LEVEL 3 COMMUNICATIONS, LLC - ND 636   2023-02-28   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.