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: LNCLILXCEMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-605 1 Lincoln IL 224C ONVOY, LLC 366   2026-05-10   
217-605 9 Lincoln IL 224C ONVOY, LLC 366   2026-04-05   
217-731 8 Clinton IL 224C ONVOY, LLC 366   2026-05-30   
217-934 0 Clinton IL 224C ONVOY, LLC 366   2026-02-20   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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