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: 791

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
701-791 A Bismarck ND BSMRNDBCX9X  321J HD CARRIER LLC 638      
701-791 0 Bismarck ND BSMRNDBCX3X  624H ONVOY SPECTRUM, LLC 638   2023-11-28   
701-791 1 Bismarck ND BSMRNDBCSMD  452F ONVOY, LLC - ND 638   2020-08-20   
701-791 2 Bismarck ND BSMRNDBCSMD  452F ONVOY, LLC - ND 638   2020-10-23   
701-791 7 Bismarck ND BSMRNDBCXCX  321J HD CARRIER LLC 638   2020-06-05   
701-791 8 Bismarck ND BSMRNDBCXCX  321J HD CARRIER LLC 638   2020-06-05   
701-791 9 Bismarck ND BSMRNDBCX9X  321J HD CARRIER LLC 638   2019-05-31   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.