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.

OCN: 1491 TWIN VALLEY-ULEN TEL. CO., INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
218-356 A Gary MN GARYMNXGRS0  636      
218-473 A Waubun MN WABNMNXWRS0  636      
218-567 A Flom MN FLOMMNXFRS0  636      
218-584 A Twin Valley MN TWVYMNXTRS0  636      
218-596 A Ulen MN ULENMNXURS0  636      
218-734 A Waubun MN WABNMNXWRS0  636      
218-983 A White Earth MN WHERMNXWRS0  636      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.