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.

Minnewaukan, ND

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
701-473 A DVLKNDAMDS1  1447 NORTH DAKOTA TELEPHONE CO. 638      
701-615 A BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2026-07-02   
701-615 7 BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2026-07-02   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.