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: DWGVILDGDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
630-353 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-512 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-515 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-719 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-724 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-725 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-737 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-810 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-829 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-852 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-960 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-963 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-964 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-968 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-969 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      
630-971 A Downers Grove IL 9329 AMERITECH ILLINOIS 358      

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

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