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: SPFDILES7MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-290 A Riverton IL 224C ONVOY, LLC 374      
217-441 A Springfield IL 224C ONVOY, LLC 374      
217-915 A Auburn IL 224C ONVOY, LLC 374      
217-931 A Springfield IL 224C ONVOY, LLC 374      
217-953 A Springfield IL 224C ONVOY, LLC 374      
217-960 A Springfield IL 224C ONVOY, LLC 374   2025-01-05   
447-228 A Oreana IL 224C ONVOY, LLC 374      
447-257 A Mason City IL 224C ONVOY, LLC 374      
447-261 A Pleasant Plains IL 224C ONVOY, LLC 374      
447-267 A Oakford IL 224C ONVOY, LLC 374      
447-273 A Loami IL 224C ONVOY, LLC 374      
447-274 A Petersburg IL 224C ONVOY, LLC 374      
447-317 A Scottville IL 224C ONVOY, LLC 374      
447-387 A Sullivan IL 224C ONVOY, LLC 374      
447-427 A Tallula IL 224C ONVOY, LLC 374      
447-467 A Williamsville IL 224C ONVOY, LLC 374      
447-910 A Springfield IL 224C ONVOY, LLC 374      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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