Local Calling Guide

Area code/prefix search

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OCN: 6115 LEVEL 3 COMMUNICATIONS, LLC - IL

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
312-824 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2016-08-05   
312-854 0 Chicago Zone 01-Franklin IL CHCGILGMDS7  358   2008-07-02   
312-854 1 Chicago Zone 01-Franklin IL CHCGILGMDS7  358   2008-07-02   
312-854 2 Chicago Zone 01-Franklin IL CHCGILGMDS7  358   2008-07-02   
312-858 1 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 2 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 3 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 4 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 5 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 6 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 7 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 8 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-858 9 Chicago Zone 01-Calumet IL   358   2016-02-20   
312-871 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2016-06-25   
312-872 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-872 5 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2018-09-02   
312-878 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2008-06-09   
312-878 2 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2008-06-12   
312-878 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2008-06-12   
312-878 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2008-06-12   
312-881 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2001-12-26   
312-881 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2000-07-20   
312-881 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2000-07-20   
312-884 2 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2000-08-17   
312-884 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2000-06-05   
312-889 9 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2015-08-25   
312-893 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 2 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 4 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 5 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-893 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-895 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-896 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-932 5 Chicago Zone 01-Superior IL CHCGILGMDS7  358   2001-12-06   
312-932 6 Chicago Zone 01-Superior IL CHCGILGMDS7  358   2000-07-07   
312-948 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2002-06-02   
312-948 4 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2002-06-03   
312-948 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2002-06-03   
312-948 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2002-06-03   
312-948 9 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2011-08-06   
312-957 4 Chicago Zone 01-Wabash IL CHCGILGMDS7  358   2006-07-03   
312-957 5 Chicago Zone 01-Wabash IL CHCGILGMDS7  358   2006-07-03   
312-957 6 Chicago Zone 01-Wabash IL CHCGILGMDS7  358   2006-07-03   
312-957 7 Chicago Zone 01-Wabash IL CHCGILGMDS7  358   2006-07-03   
312-957 8 Chicago Zone 01-Wabash IL CHCGILGMDS7  358   2006-07-03   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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