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: TOWRMNXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-753 A Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 1 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 2 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 3 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 4 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 5 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 6 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 7 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 8 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-753 9 Tower MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      

Last updated: Sun, 17 May 2026 03:26:51 UTC

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