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: CLWRMNXCDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
320-558 A Clearwater MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      
320-558 0 Clearwater MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      
320-558 2 Clearwater MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      
320-558 4 Clearwater MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      
320-558 5 Clearwater MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      
320-558 6 Clearwater MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      
320-558 9 Clearwater MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      

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

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