Local Calling Guide

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Chicago Zone 01-Calumet, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-637 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 9 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 0 CHCGILCNHMD  073H TELNYX LLC 358   2022-08-25   
312-638 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 5 CHCGILCPDS9  138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2015-04-24   
312-638 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 9 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-639 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-639 0 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 1 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 2 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 3 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 4 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 5 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 6 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 7 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 8 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 9 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-646 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-646 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-646 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 6 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2008-02-05   
312-646 7 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2008-02-05   
312-646 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-06-27   
312-646 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-06-27   
312-647 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-647 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-08-19   
312-647 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-08-19   
312-647 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2013-07-16   
312-647 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-08-19   
312-647 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-07-15   
312-656 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-656 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-667 A CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
312-667 0 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 1 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 2 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 3 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 4 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 5 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 6 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 7 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 8 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 9 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-668 A CHCGIL24X0X  425J CSC WIRELESS, LLC 358      
312-668 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2019-10-04   
312-668 1 CHCGILCPDS9  138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2019-09-16   
312-668 2 CHCGIL24X0X  425J CSC WIRELESS, LLC 358   2019-07-19   
312-668 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2019-09-14   
312-668 4 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2019-07-20   
312-668 5 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2019-07-20   
312-668 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-08-18   
312-668 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-08-18   
312-668 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-08-18   
312-668 9 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-08-18   
312-671 A ELGNILOTGT5  5562 METROPCS, INC. 358      
312-671 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-671 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-671 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-671 3 ELGNILOTGT5  5562 METROPCS, INC. 358      
312-671 4 ELGNILOTGT5  5562 METROPCS, INC. 358      
312-671 5 ELGNILOTGT5  5562 METROPCS, INC. 358      
312-671 6 ELGNILOTGT5  5562 METROPCS, INC. 358      
312-671 7 ELGNILOTGT5  5562 METROPCS, INC. 358      
312-671 8 ELGNILOTGT5  5562 METROPCS, INC. 358      
312-671 9 ELGNILOTGT5  5562 METROPCS, INC. 358      
312-673 A CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
312-674 A CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-674 0 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-674 1 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2022-01-07   
312-674 2 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-674 3 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-674 4 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-674 5 CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-674 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-06-24   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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