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: MCMBILXDX9X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-815 A Niota IL 224C ONVOY, LLC 977      
309-960 A Kirkwood IL 224C ONVOY, LLC 977   2024-08-06   
447-272 A Ferris IL 224C ONVOY, LLC 977      
447-437 A Basco IL 224C ONVOY, LLC 977      
447-440 A Bowen IL 224C ONVOY, LLC 977      
447-441 A Elvaston IL 224C ONVOY, LLC 977      
447-457 A Sutter IL 224C ONVOY, LLC 977      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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