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
312-202 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 0 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 1 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 4 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 5 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 6 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 7 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 8 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-202 9 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-204 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-204 0 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-204 1 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-204 2 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-204 3 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-204 4 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-204 5 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-227 A Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358      
312-227 0 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 1 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 2 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 3 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 4 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 5 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 6 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 7 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 8 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-227 9 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2010-10-15   
312-255 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 0 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 1 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 2 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 3 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 4 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 5 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 6 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 8 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-255 9 Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-266 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-267 7 Chicago Zone 01-Franklin IL 9329 ILLINOIS BELL TEL CO 358   2001-09-26   
312-268 3 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2000-09-28   
312-274 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-278 6 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2000-09-28   
312-278 8 Chicago Zone 01-Calumet IL 9329 ILLINOIS BELL TEL CO 358   2000-09-28   
312-280 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-302 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-306 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-337 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-397 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-445 A Chicago Zone 01-Superior IL 9329 ILLINOIS BELL TEL CO 358      
312-469 A 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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