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
312-783 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-784 A CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
312-784 0   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 1   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 2   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 3   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 4   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 5   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 6   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 7   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 8   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-784 9   460K FIRST COMMUNICATIONS, LLC 358   2007-09-02   
312-785 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-785 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-785 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-03   
312-791 A CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-791 0   9329 ILLINOIS BELL TEL CO 358      
312-791 1   9329 ILLINOIS BELL TEL CO 358      
312-791 2   9329 ILLINOIS BELL TEL CO 358      
312-791 3   9329 ILLINOIS BELL TEL CO 358      
312-791 4   9329 ILLINOIS BELL TEL CO 358      
312-791 5   9329 ILLINOIS BELL TEL CO 358      
312-791 6   9329 ILLINOIS BELL TEL CO 358      
312-791 7   9329 ILLINOIS BELL TEL CO 358      
312-791 8   9329 ILLINOIS BELL TEL CO 358      
312-791 9   145J TERRA NOVA TELECOM INC. 358   2025-04-09   
312-792 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-792 0   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-792 1   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-792 2   197D VONAGE AMERICA LLC 358   2025-10-21   
312-792 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2015-01-11   
312-792 4   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-792 5   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-792 6   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-792 7   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-792 8   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-792 9   6529 T-MOBILE USA, INC. 358   2015-01-13   
312-796 A CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
312-796 0   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2016-09-16   
312-796 1   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2016-10-11   
312-796 2   138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2016-09-17   
312-796 3   318J COMCAST IP PHONE, LLC 358   2016-09-17   
312-796 4   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2016-10-11   
312-796 5   984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-09-17   
312-796 6   984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-09-17   
312-796 7   984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-09-17   
312-796 8   984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-09-17   
312-796 9   984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-09-17   
312-800 A CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
312-800 0   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-01-11   
312-800 1   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2013-01-27   
312-800 2   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2013-01-27   
312-800 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2013-02-08   
312-800 4   829J PAETEC ITEL, LLC 358   2013-01-15   
312-800 5   829J PAETEC ITEL, LLC 358   2013-01-15   
312-800 6   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-01-30   
312-800 7   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-01-30   
312-800 8   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-01-11   
312-800 9   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-01-30   
312-801 A CHCGILIDX9X  551G NUSO, LLC 358      
312-801 0   6529 T-MOBILE USA, INC. 358   2013-11-14   
312-801 1   551G NUSO, LLC 358   2013-06-28   
312-801 2   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-07-01   
312-801 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-07-01   
312-801 4   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-07-01   
312-801 5   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-07-01   
312-801 6   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-07-01   
312-801 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-08-12   
312-801 8   460K FIRST COMMUNICATIONS, LLC 358   2013-09-21   
312-801 9   224C ONVOY, LLC 358   2013-10-02   
312-808 A CHCGILCADS0  9329 ILLINOIS BELL TEL CO 358      
312-809 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-809 0   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-809 1   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-809 2   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-809 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-12-09   
312-809 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-12-09   
312-809 5   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-809 6   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-809 7   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-809 8   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-809 9   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-06   
312-815 A CHCGIL249MD  996H AIRESPRING, INC. 358      
312-815 0   996H AIRESPRING, INC. 358   2018-06-21   
312-815 1   224C ONVOY, LLC 358   2018-11-06   
312-815 2   224C ONVOY, LLC 358   2018-11-06   

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

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