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: DLTHMNMEQMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-491 A Duluth MN 8581 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 624      
218-491 7 Duluth MN 8581 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 624   2007-12-08   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.