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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
312-887 0 Chicago Zone 01-Canal IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-887 1 Chicago Zone 01-Canal IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-02-07   
312-887 2 Chicago Zone 01-Canal IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-02-07   
312-887 3 Chicago Zone 01-Canal IL CHCGILCLDS0  9329 ILLINOIS BELL TEL CO 358      
312-887 4 Chicago Zone 01-Canal IL CHCGILCLDS0  9329 ILLINOIS BELL TEL CO 358      
312-887 5 Chicago Zone 01-Canal IL CHCGILCLDS0  9329 ILLINOIS BELL TEL CO 358      
312-887 6 Chicago Zone 01-Canal IL CHCGILCLDS0  9329 ILLINOIS BELL TEL CO 358      
312-887 7 Chicago Zone 01-Canal IL CHCGILCLDS0  9329 ILLINOIS BELL TEL CO 358      
312-887 8 Chicago Zone 01-Canal IL CHCGILCLDS0  9329 ILLINOIS BELL TEL CO 358      
312-887 9 Chicago Zone 01-Canal IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-888 A Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-888 0 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-03-31   
312-888 1 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-03-31   
312-888 2 Chicago Zone 01-Calumet IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2012-03-19   
312-888 3 Chicago Zone 01-Calumet IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2012-03-19   
312-888 4 Chicago Zone 01-Calumet IL CHCGILDTKMD  5447 ACCESS ONE, INC. - IL 358   2013-12-19   
312-888 5 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-03-31   
312-888 6 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-03-31   
312-888 7 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2013-12-19   
312-888 8 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2013-12-19   
312-888 9 Chicago Zone 01-Calumet IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2012-08-31   
312-889 A Chicago Zone 01-Calumet IL CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-889 0 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-08-25   
312-889 1 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-08-25   
312-889 2 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-08-25   
312-889 3 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-08-25   
312-889 4 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-08-25   
312-889 5 Chicago Zone 01-Calumet IL CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-08-24   
312-889 6 Chicago Zone 01-Calumet IL CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-08-24   
312-889 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-08-25   
312-889 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2015-08-25   
312-889 9 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2015-08-25   
312-890 A Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358      
312-890 0 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2010-11-05   
312-890 1 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2010-11-05   
312-890 2 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-890 3 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358      
312-890 4 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2010-11-05   
312-890 5 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2010-11-05   
312-890 6 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2010-11-05   
312-890 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2010-11-05   
312-890 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358      
312-890 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-891 A Chicago Zone 01-Wabash IL LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-892 A Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 0 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 1 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 2 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 3 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 4 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 5 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 6 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 7 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 8 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 9 Chicago Zone 01-Calumet IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-893 A Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 2 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 4 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 5 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-893 9 Chicago Zone 01-Calumet IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2022-06-16   
312-894 A Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 0 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 1 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 2 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 3 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 4 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 5 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 6 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 7 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 8 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-894 9 Chicago Zone 01-Monroe IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-07   
312-895 A Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-896 A Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-897 A Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-897 0 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-04   
312-897 1 Chicago Zone 01-Calumet IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2015-05-25   
312-897 2 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2015-05-07   
312-897 3 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2015-05-07   
312-897 4 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2015-05-07   
312-897 5 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2015-06-05   
312-897 6 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2015-06-05   
312-897 7 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2015-06-05   
312-897 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-04   
312-897 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2015-06-04   
312-898 A Chicago Zone 01-Wabash IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-899 A Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-899 0 Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-899 1 Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-899 2 Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-899 3 Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-899 4 Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-899 5 Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-899 6 Chicago Zone 01-Franklin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-899 7 Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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