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
312-928 4 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 5 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 6 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 7 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 8 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 9 Chicago Zone 01-Canal IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-07   
312-929 A Chicago Zone 01-Calumet IL CHCGILMFCM6  6529 T-MOBILE USA, INC. 358      
312-929 0 Chicago Zone 01-Calumet IL   7056 XO ILLINOIS, INC. 358   2011-06-12   
312-929 1 Chicago Zone 01-Calumet IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2009-12-14   
312-929 2 Chicago Zone 01-Calumet IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2006-12-18   
312-929 3 Chicago Zone 01-Calumet IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2006-12-18   
312-929 4 Chicago Zone 01-Calumet IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2006-12-18   
312-929 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2008-11-01   
312-929 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2007-07-27   
312-929 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2008-02-08   
312-929 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2008-02-25   
312-929 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2007-07-27   
312-930 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-931 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-931 0 Chicago Zone 01-Franklin IL   6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-931 1 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-931 2 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-931 3 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-931 4 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358   2011-01-05   
312-931 5 Chicago Zone 01-Franklin IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2011-09-20   
312-931 6 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-931 7 Chicago Zone 01-Franklin IL   6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-931 8 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-931 9 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-932 A Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-932 0 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-932 1 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-932 2 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-932 3 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-932 4 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-932 5 Chicago Zone 01-Superior IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2001-12-06   
312-932 6 Chicago Zone 01-Superior IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2000-07-07   
312-932 7 Chicago Zone 01-Superior IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2000-07-07   
312-932 8 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-932 9 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-933 A Chicago Zone 01-Wabash IL BRDVILBOCM0  6664 SPRINT SPECTRUM L.P. 358      
312-934 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-934 0 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-12-18   
312-934 1 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2015-12-05   
312-934 2 Chicago Zone 01-Calumet IL   7575 CENTURYLINK COMMUNICATIONS LLC 358   2015-03-09   
312-934 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-02-05   

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

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