Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGILSUDS2

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-469 4 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-475 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-482 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-573 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-640 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-642 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-649 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-664 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 0 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 1 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 2 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 4 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 6 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 7 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 8 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-694 9 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-695 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-703 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-712 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-787 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-799 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-799 2 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-799 3 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-799 4 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-799 5 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-799 6 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358   2000-07-28   
312-799 8 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358   2000-11-18   
312-908 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-915 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-921 A Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358      
312-921 0 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 1 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 2 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 3 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 4 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 5 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 6 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 7 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 8 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-921 9 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2008-09-01   
312-926 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-943 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-944 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-951 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-951 0 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-951 1 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-951 2 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-951 4 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-951 5 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      

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

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