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
312-604 0 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 1 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 2 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 4 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2004-11-27   
312-604 5 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2019-03-04   
312-604 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-10-16   
312-604 7 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 8 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-604 9 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-605 A CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
312-605 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-02   
312-605 1 CHCGIL24DS6  224C ONVOY, LLC 358   2012-10-02   
312-605 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-02   
312-605 3 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2012-09-29   
312-605 4 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2012-09-29   
312-605 5 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2012-09-29   
312-605 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-02   
312-605 7 OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-04   
312-605 8 CHCGILDTKMD  5447 ACCESS ONE, INC. - IL 358   2012-10-02   
312-605 9 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2012-11-01   
312-610 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-610 0 RVDLILBDAMD  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 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-06-10   
312-610 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2013-06-10   
312-610 4 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 5 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 6 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 7 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-02   
312-610 8 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2012-10-02   
312-610 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-11-18   
312-614 A CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-614 0 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-12-14   
312-614 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-12-14   
312-614 2 CHCGIL24DS6  224C ONVOY, LLC 358   2012-12-08   
312-614 3 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-23   
312-614 4 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-23   
312-614 5 CHCGIL24DS6  224C ONVOY, LLC 358   2012-12-08   
312-614 6 CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358   2012-11-18   
312-614 7 CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358   2012-11-18   
312-614 8 CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358   2012-11-18   
312-614 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2012-11-28   
312-617 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-617 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-619 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-619 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2012-10-26   
312-619 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2012-10-26   
312-619 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2012-10-26   
312-619 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2012-10-29   
312-619 4 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-04   
312-619 5 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-04   
312-619 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-11-18   
312-619 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2012-11-28   
312-619 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2012-11-28   
312-619 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2012-10-26   
312-620 A CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
312-620 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 1 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 2 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 3 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 4 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 5 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 6 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 8 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-620 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-10-13   
312-625 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-625 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 1 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 2 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 3 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 4 CHCGILCPDS9  138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2014-02-24   
312-625 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-01-26   
312-625 6 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 8 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-625 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-626 A CHCGIL24DS6  224C ONVOY, LLC 358      
312-626 0 CHCGIL24DS6  224C ONVOY, LLC 358   2013-08-15   
312-626 1 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2013-07-21   
312-626 2 CHCGIL24DS6  224C ONVOY, LLC 358   2008-03-31   
312-626 3 CHCGIL24DS6  224C ONVOY, LLC 358   2013-08-15   
312-626 4 CHCGIL24DS6  224C ONVOY, LLC 358   2013-08-15   
312-626 5 CHCGIL24DS6  224C ONVOY, LLC 358   2013-08-15   
312-626 6 CHCGIL24DS6  224C ONVOY, LLC 358   2013-08-15   
312-626 7 CHCGIL24DS6  224C ONVOY, LLC 358   2013-08-15   
312-626 8 CHCGIL24DS6  224C ONVOY, LLC 358   2013-08-15   
312-626 9 CHCGIL24DS6  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: Tue, 07 Oct 2025 16:47:53 UTC

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