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: OKBRILDODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-356 A Elk Grove IL 259E YMAX COMMUNICATIONS CORP. - IL 358   2007-05-05   
224-365 A Northbrook IL 259E YMAX COMMUNICATIONS CORP. - IL 358      
224-635 A Elk Grove IL 259E YMAX COMMUNICATIONS CORP. - IL 358   2009-03-16   
312-473 A Chicago Zone 01-Calumet IL 259E YMAX COMMUNICATIONS CORP. - IL 358      
630-847 A Lombard IL 259E YMAX COMMUNICATIONS CORP. - IL 358   2007-05-05   
708-357 A La Grange IL 259E YMAX COMMUNICATIONS CORP. - IL 358   2008-11-22   
708-970 A Bellwood IL 259E YMAX COMMUNICATIONS CORP. - IL 358      
773-340 A Chicago Zone 08-Portsmouth IL 259E YMAX COMMUNICATIONS CORP. - IL 358      
773-599 A Chicago Zone 08-Portsmouth IL 259E YMAX COMMUNICATIONS CORP. - IL 358      
773-609 A Chicago Zone 10-Beverly IL 259E YMAX COMMUNICATIONS CORP. - IL 358      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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