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: MTONILXCRMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-296 A Shelbyville IL 224C ONVOY, LLC 976      
217-961 A Mattoon IL 224C ONVOY, LLC 976      
217-990 A Arcola IL 224C ONVOY, LLC 976      
447-205 A Greenup IL 224C ONVOY, LLC 976      
447-213 A Shelbyville IL 224C ONVOY, LLC 976      
447-215 A Watson IL 224C ONVOY, LLC 976      
447-221 A Westervelt IL 224C ONVOY, LLC 976      
447-223 A Findlay IL 224C ONVOY, LLC 976      
447-224 A Kirksville IL 224C ONVOY, LLC 976      
447-288 A Charleston IL 224C ONVOY, LLC 976   2024-04-22   
447-290 A Effingham IL 224C ONVOY, LLC 976   2024-05-04   
447-810 A Mattoon IL 224C ONVOY, LLC 976      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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