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

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
218-356 A Gary MN GARYMNXGRS3  636      
218-473 A Waubun MN WABNMNXWRS4  636      
218-567 A Flom MN FLOMMNXFRS5  636      
218-584 A Twin Valley MN TWVYMNXTDS0  636      
218-596 A Ulen MN ULENMNXURS5  636      
218-734 A Waubun MN WABNMNXARS7  636      
218-983 A White Earth MN WHERMNXWRS9  636      

Last updated: Sat, 10 Oct 2020 02:22:41 UTC

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