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.

Switch: MNDNNDBADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
701-663 A Mandan ND 9631 QWEST CORPORATION 638      
701-667 A Mandan ND 9631 QWEST CORPORATION 638      

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.