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Chicago Zone 04-Humboldt, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-537 6 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-07-15   
773-537 7 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-11-12   
773-537 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-09-26   
773-537 9 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-07-15   
773-543 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-543 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-10   
773-543 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-26   
773-543 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-10   
773-572 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 0 CHCGIL24DS6  224C ONVOY, LLC 358   2007-05-16   
773-572 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 9 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-598 A EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
773-598 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-12-27   
773-598 1 EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
773-598 2 EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
773-598 3 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2007-03-10   
773-598 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-10-28   
773-598 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-03-13   
773-598 6 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-07-15   
773-598 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-07-15   
773-598 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-09-10   
773-598 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   
773-634 A EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
773-634 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-12-14   
773-634 1 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-12   
773-634 2 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-634 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-12   
773-634 4 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-12   
773-634 5   224C ONVOY, LLC 358   2025-09-27   
773-634 6 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2005-07-10   
773-634 7 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-12   
773-634 8 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-12   
773-634 9 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-645 A CHCGILHBDS1  9329 ILLINOIS BELL TEL CO 358      
773-645 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-03-30   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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