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Chicago Zone 01-Calumet, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-604 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2004-11-27   
312-604 5   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2019-03-04   
312-604 6   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-10-16   
312-604 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-605 A CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
312-605 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-02   
312-605 1   224C ONVOY, LLC 358   2012-10-02   
312-605 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-02   
312-605 3   829J PAETEC ITEL, LLC 358   2012-09-29   
312-605 4   829J PAETEC ITEL, LLC 358   2012-09-29   
312-605 5   829J PAETEC ITEL, LLC 358   2012-09-29   
312-605 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-02   
312-605 7   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-04   
312-605 8   5447 ACCESS ONE, INC. - IL 358   2012-10-02   
312-605 9   460K FIRST COMMUNICATIONS, LLC 358   2012-11-01   
312-610 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-610 0   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-10-01   
312-610 1   515J IP HORIZON LLC 358   2013-06-10   
312-610 2   6529 T-MOBILE USA, INC. 358   2013-06-10   
312-610 3   6529 T-MOBILE USA, INC. 358   2013-06-10   
312-610 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 8   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2012-10-02   
312-610 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-11-18   
312-614 A CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-614 0   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-12-14   
312-614 1   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-12-14   
312-614 2   224C ONVOY, LLC 358   2012-12-08   
312-614 3   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-23   
312-614 4   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-23   
312-614 5   224C ONVOY, LLC 358   2012-12-08   
312-614 6   9329 ILLINOIS BELL TEL CO 358   2012-11-18   
312-614 7   9329 ILLINOIS BELL TEL CO 358   2012-11-18   
312-614 8   9329 ILLINOIS BELL TEL CO 358   2012-11-18   
312-614 9   6529 T-MOBILE USA, INC. 358   2012-11-28   
312-617 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 0   6529 T-MOBILE USA, INC. 358      
312-617 1   6529 T-MOBILE USA, INC. 358      
312-617 2   6529 T-MOBILE USA, INC. 358      
312-617 3   6529 T-MOBILE USA, INC. 358      
312-617 4   6529 T-MOBILE USA, INC. 358      
312-617 5   6529 T-MOBILE USA, INC. 358      
312-617 6   6529 T-MOBILE USA, INC. 358      
312-617 7   6529 T-MOBILE USA, INC. 358      
312-617 8   6529 T-MOBILE USA, INC. 358      
312-617 9   6529 T-MOBILE USA, INC. 358      
312-619 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-619 0   6529 T-MOBILE USA, INC. 358   2012-10-26   
312-619 1   6529 T-MOBILE USA, INC. 358   2012-10-26   
312-619 2   6529 T-MOBILE USA, INC. 358   2012-10-26   
312-619 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-29   
312-619 4   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-04   
312-619 5   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-04   
312-619 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-11-18   
312-619 7   6529 T-MOBILE USA, INC. 358   2012-11-28   
312-619 8   6529 T-MOBILE USA, INC. 358   2012-11-28   
312-619 9   6529 T-MOBILE USA, INC. 358   2012-10-26   
312-620 A CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
312-620 0   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 1   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 2   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 4   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 5   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 6   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 7   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 8   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 9   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-625 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-625 0   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 1   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 2   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 4   138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2014-02-24   
312-625 5   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-01-26   
312-625 6   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 7   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 8   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 9   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-626 A CHCGIL24DS6  224C ONVOY, LLC 358      
312-626 0   224C ONVOY, LLC 358   2013-08-15   
312-626 1   460K FIRST COMMUNICATIONS, LLC 358   2013-07-21   
312-626 2   224C ONVOY, LLC 358   2008-03-31   
312-626 3   224C ONVOY, LLC 358   2013-08-15   
312-626 4   224C ONVOY, LLC 358   2013-08-15   
312-626 5   224C ONVOY, LLC 358   2013-08-15   
312-626 6   224C ONVOY, LLC 358   2013-08-15   
312-626 7   224C ONVOY, LLC 358   2013-08-15   
312-626 8   224C ONVOY, LLC 358   2013-08-15   
312-626 9   224C ONVOY, LLC 358   2013-08-15   
312-628 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-628 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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