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: WCHCILWCDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
630-231 A West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-293 A West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 A West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 0 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 1 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 2 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 3 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 4 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 5 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 7 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 8 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-562 9 West Chicago IL 9329 ILLINOIS BELL TEL CO 358      
630-876 A West Chicago IL 9329 ILLINOIS BELL TEL CO 358      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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