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
312-931 1 Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-931 2 Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-931 3 Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-931 4 Chicago Zone 01-Franklin IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2011-01-05   
312-931 5 Chicago Zone 01-Franklin IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2011-09-20   
312-931 6 Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-931 7 Chicago Zone 01-Franklin IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-931 8 Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-931 9 Chicago Zone 01-Franklin IL CHCGILFRDS4  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 CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-932 1 Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-932 2 Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-932 3 Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-932 4 Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-932 5 Chicago Zone 01-Superior IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2001-12-06   
312-932 6 Chicago Zone 01-Superior IL EKGVILAADS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358   2000-07-07   
312-932 7 Chicago Zone 01-Superior IL EKGVILAADS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358   2000-07-07   
312-932 8 Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-932 9 Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-933 A Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358      
312-934 A Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358      
312-934 0 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2015-12-18   
312-934 1 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2015-12-05   
312-934 2 Chicago Zone 01-Calumet IL CHCGILDT8MD  7575 CENTURYLINK COMMUNICATIONS LLC 358   2015-03-09   
312-934 3 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 4 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 5 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 6 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 7 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 8 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-934 9 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-02-05   
312-935 A Chicago Zone 01-Wabash IL CHCGILWBDS3  9329 AMERITECH ILLINOIS 358      
312-936 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-937 A Chicago Zone 01-Calumet IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-937 0 Chicago Zone 01-Calumet IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 1 Chicago Zone 01-Calumet IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 2 Chicago Zone 01-Calumet IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 3 Chicago Zone 01-Calumet IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-11-09   
312-937 4 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-07-22   
312-937 5 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2015-07-22   
312-937 6 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2015-07-22   
312-937 7 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2015-07-22   
312-937 8 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2015-07-22   
312-937 9 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2014-11-15   
312-938 A Chicago Zone 01-Lakeshore IL CHCGILLRDS0  9329 AMERITECH ILLINOIS 358      
312-939 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 AMERITECH ILLINOIS 358      
312-940 A Chicago Zone 01-Calumet IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
312-940 0 Chicago Zone 01-Calumet IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 1 Chicago Zone 01-Calumet IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   

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Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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