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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
312-821 7 Chicago Zone 01-Superior IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 8 Chicago Zone 01-Superior IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 9 Chicago Zone 01-Superior IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-822 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 ILLINOIS BELL TEL CO 358      
312-823 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-823 0 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-06-27   
312-823 1 Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-823 2 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-06-27   
312-823 3 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-05-22   
312-823 4 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-05-22   
312-823 5 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-05-22   
312-823 6 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-09-15   
312-823 7 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-09-15   
312-823 8 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-09-15   
312-823 9 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-09-15   
312-824 A Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-824 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2016-08-05   
312-824 1 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2016-08-05   
312-824 2 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2016-08-04   
312-824 3 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2016-08-04   
312-824 4 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2016-08-04   
312-824 5 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2016-08-05   
312-824 6 Chicago Zone 01-Calumet IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2016-08-05   
312-824 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2016-08-05   
312-824 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2016-08-05   
312-824 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2016-08-05   
312-825 A Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-825 0 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-05-28   
312-825 1 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-05-28   
312-825 2 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-05-16   
312-825 3 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-04-16   
312-825 4 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-04-16   
312-825 5 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-04-16   
312-825 6 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-05-14   
312-825 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-05-14   
312-825 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-05-14   
312-825 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-05-14   
312-826 A Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-826 0 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 1 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 2 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 3 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 4 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 5 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 6 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-826 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-08-14   
312-827 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-828 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 ILLINOIS BELL TEL CO 358      
312-829 A Chicago Zone 01-Monroe IL CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358      
312-830 A Chicago Zone 01-Wabash IL LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
312-831 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-832 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 ILLINOIS BELL TEL CO 358      
312-833 A Chicago Zone 01-Wabash IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-834 A Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-834 0 Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-834 1 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-07-01   
312-834 2 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-07-01   
312-834 3 Chicago Zone 01-Wabash IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-834 4 Chicago Zone 01-Wabash IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-834 5 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-834 6 Chicago Zone 01-Wabash IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-834 7 Chicago Zone 01-Wabash IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-834 8 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-07-01   
312-834 9 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-07-01   
312-835 A Chicago Zone 01-Wabash IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-836 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 ILLINOIS BELL TEL CO 358      
312-837 A Chicago Zone 01-Calumet IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
312-837 0 Chicago Zone 01-Calumet IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2015-10-19   
312-837 1 Chicago Zone 01-Calumet IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2015-11-04   
312-837 2 Chicago Zone 01-Calumet IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2016-06-17   
312-837 3 Chicago Zone 01-Calumet IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2015-10-18   
312-837 4 Chicago Zone 01-Calumet IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2015-11-04   
312-837 5 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2015-10-26   
312-837 6 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2015-10-26   
312-837 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2015-10-26   
312-837 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2015-10-26   
312-837 9 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-11-23   
312-838 A Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-838 0 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 1 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 2 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 3 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 4 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 5 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 6 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 7 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 8 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 9 Chicago Zone 01-Calumet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2016-02-25   
312-839 A Chicago Zone 01-Wabash IL CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-840 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 ILLINOIS BELL TEL CO 358      
312-841 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 0 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 1 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 2 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 3 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 4 Chicago Zone 01-Wabash IL ELGNILOTGT5  5562 METROPCS, INC. 358   2011-01-05   
312-841 5 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-05-07   
312-841 6 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      

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

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