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: GLPTILXDRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
309-873 A Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
309-873 0 Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
309-873 1 Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
309-873 2 Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
309-873 6 Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
309-873 7 Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
309-873 8 Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
309-873 9 Gulfport IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      

Last updated: Sat, 02 May 2026 12:20:53 UTC

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