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: DLTHMNMEX7X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-216 A Duluth MN 184D ONVOY, LLC - MN 624      
218-218 A Carlton MN 184D ONVOY, LLC - MN 624   2024-10-20   
218-231 A Hibbing MN 184D ONVOY, LLC - MN 624      
218-274 A Chisholm MN 184D ONVOY, LLC - MN 624      
218-292 A Bear River MN 184D ONVOY, LLC - MN 624      
218-300 A Tower MN 184D ONVOY, LLC - MN 624      
218-302 A Duluth MN 184D ONVOY, LLC - MN 624      
218-423 A Sturgeon Lake MN 184D ONVOY, LLC - MN 624      
218-501 A Alborn MN 184D ONVOY, LLC - MN 624      
218-502 A Ranier MN 184D ONVOY, LLC - MN 624      
218-516 A Biwabik MN 184D ONVOY, LLC - MN 624      
218-520 A Duluth MN 184D ONVOY, LLC - MN 624      
218-595 A Two Harbors MN 184D ONVOY, LLC - MN 624      
218-649 A Warba MN 184D ONVOY, LLC - MN 624      
218-718 A Embarrass MN 184D ONVOY, LLC - MN 624      
218-810 A Duluth MN 184D ONVOY, LLC - MN 624      
218-812 A Coleraine MN 184D ONVOY, LLC - MN 624      
218-881 A Ely MN 184D ONVOY, LLC - MN 624      
218-882 A Carlton MN 184D ONVOY, LLC - MN 624      
218-934 A Sturgeon Lake MN 184D ONVOY, LLC - MN 624      
715-992 A Mont du Lac WI 225C ONVOY, LLC - WI 624      

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

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