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: INFLMNXIDS0

Remotes:

Switch Switch name Switch type
BGFSMNXBRS0  BIG FALLS  DC1 
BRRVMNXBRS0  BEAR RIVER  DC1 
CNLKMNXBRS0  CRANE LAKE  DC1 
ERBGMNXERS3  ERICSBURG  DCL 
GRNYMNXGRS0  GREANEY  DC1 
KBTGMNXNRS0  KABETOGAMA  DC1 
LTFKMNXLRS2  LITTLEFORK  DC1 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-283 A International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 A International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 0 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 2 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 3 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 4 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 5 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 6 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 7 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-285 9 International Falls MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      

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

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