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.

South Heart, ND

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
701-413 A   3065 MIDCONTINENT COMMUNICATIONS - ND 638      
701-677 A SHRTNDXARS6  1607 CONSOLIDATED TELCOM 638      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.