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.

Richardton, ND

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
701-956 A BSMRNDGOGT0  3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-956 0   3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-956 1   3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-956 2   3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-956 3   3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-956 5   3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-956 8   3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-974 A DCSNNDASDS0  1607 CONSOLIDATED TELCOM 638      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.