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.
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Switch: NBRKILNBDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
847-205 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-272 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-291 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-412 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-480 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-498 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-509 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-559 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-562 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-564 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-664 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-714 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-753 A Northbrook IL 9329 AMERITECH ILLINOIS 358      
847-849 A Northbrook IL 9329 AMERITECH ILLINOIS 358      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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