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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-690 4 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-07-03   
312-690 5 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-07-16   
312-690 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-07-16   
312-690 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-07-16   
312-690 8 Chicago Zone 01-Calumet IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2015-03-07   
312-690 9 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-08-30   
312-691 A Chicago Zone 01-Calumet IL HMNDINPRCM0  6795 INDIANA PAGING NETWORK, INC. 358      
312-692 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 0 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 1 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-02-07   
312-692 2 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 3 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 4 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 5 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 6 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 7 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 8 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 9 Chicago Zone 01-Wabash IL ELGNILOTGT5  5562 METROPCS, INC. 358   2011-01-05   
312-693 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-694 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 0 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 1 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 2 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 3 Chicago Zone 01-Superior IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-03-16   
312-694 4 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 5 Chicago Zone 01-Superior IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-03-16   
312-694 6 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 7 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 8 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-694 9 Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-695 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-696 A Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 0 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 1 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 2 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 3 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 4 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 5 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 6 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 7 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 8 Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-696 9 Chicago Zone 01-Franklin IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-05-26   
312-697 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 0 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 1 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-05-03   
312-697 2 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 3 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 4 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 5 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 6 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 7 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 8 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 9 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2013-02-08   
312-698 A Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 2 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-12-30   
312-698 4 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 5 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-698 9 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-699 A Hinsdale IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-701 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-701 0 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-701 1 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-701 2 Chicago Zone 01-Franklin IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-10-27   
312-701 3 Chicago Zone 01-Franklin IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-10-27   
312-701 4 Chicago Zone 01-Franklin IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-05-26   
312-701 5 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-701 6 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-701 7 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-701 8 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-701 9 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-702 A Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-702 0 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 1 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 2 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 3 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-02-14   
312-702 4 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-02-15   
312-702 5 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 6 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 7 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 8 Chicago Zone 01-Calumet IL CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-04-04   
312-702 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2013-04-12   
312-703 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-704 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-705 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-706 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-707 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-708 A Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 0 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 1 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 2 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 3 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 4 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 5 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 6 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-24   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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