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: SFTNILXERS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
618-347 A Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 0 Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 1 Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 2 Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 6 Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 7 Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 8 Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 9 Sefton IL 1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      

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

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