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
312-973 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-04-15   
312-974 A Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 AMERITECH ILLINOIS 358      
312-975 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-975 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-08   
312-975 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-08   
312-975 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-08   
312-975 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-08   
312-975 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-08   
312-975 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-08   
312-975 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-11-14   
312-975 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-11-14   
312-975 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-11-14   
312-975 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-11-14   
312-977 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-978 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-978 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-978 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-12-06   
312-979 A Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-980 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-981 A Chicago Zone 01-Superior IL CHCGILWUDS0  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-981 0 Chicago Zone 01-Superior IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-981 1 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358   2001-12-18   
312-981 2 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358   2001-12-07   
312-981 3 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358   2001-12-07   
312-981 4 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358   2000-06-30   
312-981 5 Chicago Zone 01-Superior IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-981 6 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358   2000-06-30   
312-981 7 Chicago Zone 01-Superior IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2007-05-18   
312-981 8 Chicago Zone 01-Superior IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2001-01-18   
312-981 9 Chicago Zone 01-Superior IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-07   
312-982 A Chicago Zone 01-Calumet IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358      
312-982 0 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-11-24   
312-982 1 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-11-24   
312-982 2 Chicago Zone 01-Calumet IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2014-11-21   
312-982 3 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-11-24   
312-982 4 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-11-24   
312-982 5 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-11-24   
312-982 6 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-11-24   
312-982 7 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-11-24   
312-982 8 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-11-24   
312-982 9 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-11-24   
312-983 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 AMERITECH ILLINOIS 358      

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Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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