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: CHCGILCLDS3

<< 1 2 3 4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-798 5 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 6 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 7 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-831 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-869 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-869 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-869 5 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-869 6 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-869 7 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-869 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-875 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-902 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 0 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 1 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 2 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 4 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 5 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 6 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-906 9 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-930 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-954 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-985 2 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358   2000-07-07   
312-985 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358   2000-07-07   
312-985 4 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358   2000-07-07   
312-985 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358   2000-05-05   
872-825 A Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358      
872-825 0 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 1 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 2 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 3 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 4 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 5 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 6 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 7 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 8 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   
872-825 9 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-01-19   

<< 1 2 3 4

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.