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: CHCGILCLXTX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-225 A Fox Lake IL 516C AT&T CORP. 358      
224-372 A Lake Villa IL 516C AT&T CORP. 358   2007-03-12   
224-735 A Arlington Heights IL 516C AT&T CORP. 358   2006-04-15   
224-858 A Huntley IL 516C AT&T CORP. 358   2007-02-22   
630-486 A Aurora IL 516C AT&T CORP. 358   2010-07-21   
630-708 A Yorkville IL 516C AT&T CORP. 358   2007-02-22   
708-586 A Palos Park IL 516C AT&T CORP. 358      
708-634 A Oak Lawn IL 516C AT&T CORP. 358      
815-290 A Minooka IL 516C AT&T CORP. 358   2006-05-02   
815-596 A Marengo IL 516C AT&T CORP. 358   2006-05-02   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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