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: NBRKILNBDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
847-664 4 Northbrook IL 9329 ILLINOIS BELL TEL CO 358   2000-01-07   
847-664 6 Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-664 7 Northbrook IL 9329 ILLINOIS BELL TEL CO 358   2000-02-11   
847-664 8 Northbrook IL 9329 ILLINOIS BELL TEL CO 358   2000-08-14   
847-714 A Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-714 0 Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-714 1 Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-714 8 Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-714 9 Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-753 A Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-849 A Northbrook IL 9329 ILLINOIS BELL TEL CO 358      
847-849 2 Northbrook IL 9329 ILLINOIS BELL TEL CO 358   2000-02-11   
847-849 4 Northbrook IL 9329 ILLINOIS BELL TEL CO 358   2000-02-11   

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

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