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.
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Switch: OSLOMNXORS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-695 A Oslo MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-695 9 Oslo MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
701-699 A West Oslo ND 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
701-699 1 West Oslo ND 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
701-699 2 West Oslo ND 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
701-699 3 West Oslo ND 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
701-699 5 West Oslo ND 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
701-699 9 West Oslo ND 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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