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: CHMPILCPXDY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-354 0 Oakwood IL 321J HD CARRIER LLC 370   2025-10-11   
217-866 7 Champaign-Urbana IL 321J HD CARRIER LLC 370   2025-10-11   
217-991 9 Champaign-Urbana IL 321J HD CARRIER LLC 370   2025-10-11   
447-446 A Champaign-Urbana IL 321J HD CARRIER LLC 370      
447-446 9 Champaign-Urbana IL 321J HD CARRIER LLC 370   2021-04-11   
447-867 7 Westville IL 321J HD CARRIER LLC 370   2025-10-11   

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

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