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.


NPA-NXX BLOCK Rate Centre Region OCN LATA Eff date Disc date Map
218-843 A Hallock MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN [link] 636     map

Last updated: Sat, 14 Nov 2015 03:37:14 UTC

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