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: WASHILXDRS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
309-444 A Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 1 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 2 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 3 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 4 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 5 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 7 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 8 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-444 9 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-886 A Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-886 2 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      
309-886 4 Washington IL 1015 FRONTIER NORTH, INC. - IL 368      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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