Local Calling Guide

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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
312-837 7 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2015-10-26   
312-837 8 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2015-10-26   
312-837 9 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-11-23   
312-838 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-838 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-25   
312-838 9 Chicago Zone 01-Calumet IL   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 AMERITECH ILLINOIS 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   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 1 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 2 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 3 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 4 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-841 5 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-05-07   
312-841 6 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 7 Chicago Zone 01-Wabash IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-841 8 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-841 9 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-842 A Chicago Zone 01-Calumet IL CHCGILCADS1  9329 AMERITECH ILLINOIS 358      
312-843 A Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-843 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-843 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-843 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-843 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-843 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-843 5 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-04-26   
312-843 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-04-26   
312-843 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-843 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-843 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-29   
312-844 A Hinsdale IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-844 0 Hinsdale IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-845 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-846 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-846 0 Chicago Zone 01-Franklin IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-05-07   
312-846 1 Chicago Zone 01-Franklin IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2008-09-26   
312-846 2 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-846 3 Chicago Zone 01-Franklin IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 4 Chicago Zone 01-Franklin IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 5 Chicago Zone 01-Franklin IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 6 Chicago Zone 01-Franklin IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2001-06-12   

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Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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