Local Calling Guide

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Switch: CHCGILGMDS7

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-373 8 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-373 9 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-376 8 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-09-02   
312-379 8 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-12-09   
312-380 4 Chicago Zone 01-Canal IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-07-15   
312-380 5 Chicago Zone 01-Canal IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-12-09   
312-380 6 Chicago Zone 01-Canal IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-12-09   
312-386 5 Chicago Zone 01-Wabash IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-08-06   
312-386 7 Chicago Zone 01-Wabash IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-09-26   
312-395 5 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2003-01-12   
312-395 6 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2003-01-12   
312-395 7 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-10-22   
312-395 8 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2003-01-12   
312-423 A Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 1 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 2 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 3 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 4 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 5 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 6 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 7 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 8 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-423 9 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-428 A Chicago Zone 01-Wabash IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-428 4 Chicago Zone 01-Wabash IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-06-07   
312-429 A Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 0 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 1 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 2 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 4 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 5 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 6 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 7 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-429 9 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-436 0 Chicago Zone 01-Canal IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-12-09   
312-436 1 Chicago Zone 01-Canal IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-12-09   
312-436 2 Chicago Zone 01-Canal IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-12-09   
312-445 0 Chicago Zone 01-Superior IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-09   
312-445 6 Chicago Zone 01-Superior IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-05-13   
312-445 7 Chicago Zone 01-Superior IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-05-13   
312-445 8 Chicago Zone 01-Superior IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-05-14   
312-445 9 Chicago Zone 01-Superior IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-26   
312-448 9 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-10-06   
312-462 0 Chicago Zone 01-Franklin IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-12-04   
312-462 1 Chicago Zone 01-Franklin IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-20   
312-462 3 Chicago Zone 01-Franklin IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-01   
312-462 4 Chicago Zone 01-Franklin IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-01   
312-469 7 Chicago Zone 01-Superior IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-08-28   
312-469 8 Chicago Zone 01-Superior IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-07-01   
312-470 6 Chicago Zone 01-Monroe IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-20   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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