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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: CLCHILXDDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-449 A Lomax IL 1047 MCDONOUGH TEL. COOP. 977      
217-755 A Colusa IL 1047 MCDONOUGH TEL. COOP. 977      
309-254 A Industry IL 1047 MCDONOUGH TEL. COOP. 977      
309-257 A Littleton IL 1047 MCDONOUGH TEL. COOP. 977      
309-325 A Smithshire IL 1047 MCDONOUGH TEL. COOP. 977      
309-456 A Good Hope IL 1047 MCDONOUGH TEL. COOP. 977      
309-652 A Blandinsville IL 1047 MCDONOUGH TEL. COOP. 977      
309-653 A Adair IL 1047 MCDONOUGH TEL. COOP. 977      
309-746 A Raritan IL 1047 MCDONOUGH TEL. COOP. 977      
309-769 A Bardolph IL 1047 MCDONOUGH TEL. COOP. 977      
309-774 A Swan Creek IL 1047 MCDONOUGH TEL. COOP. 977      
309-776 A Colchester IL 1047 MCDONOUGH TEL. COOP. 977      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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