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: FNSNMNXFRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
320-233 A Finlayson MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      
320-233 0 Finlayson MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      
320-233 1 Finlayson MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      
320-233 6 Finlayson MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      
320-233 7 Finlayson MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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