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
312-912 1 Chicago Zone 01-Canal IL   6529 T-MOBILE USA, INC. 358   2006-11-15   
312-912 2 Chicago Zone 01-Canal IL   6529 T-MOBILE USA, INC. 358   2007-05-30   
312-912 3 Chicago Zone 01-Canal IL   6529 T-MOBILE USA, INC. 358   2007-05-30   
312-912 4 Chicago Zone 01-Canal IL   6529 T-MOBILE USA, INC. 358   2007-10-17   
312-912 5 Chicago Zone 01-Canal IL   6529 T-MOBILE USA, INC. 358   2007-10-17   
312-912 6 Chicago Zone 01-Canal IL   5917 FIRST COMMUNICATIONS, LLC 358   2010-10-15   
312-912 7 Chicago Zone 01-Canal IL   259E YMAX COMMUNICATIONS CORP. - IL 358   2008-08-29   
312-912 8 Chicago Zone 01-Canal IL   259E YMAX COMMUNICATIONS CORP. - IL 358   2008-08-29   
312-912 9 Chicago Zone 01-Canal IL   259E YMAX COMMUNICATIONS CORP. - IL 358   2008-08-29   
312-913 A Chicago Zone 01-Wabash IL CHCGILWBDS3  9329 AMERITECH ILLINOIS 358      
312-914 A Chicago Zone 01-Wabash IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-915 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-916 A Chicago Zone 01-Wabash IL CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-917 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-918 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-918 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-918 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-17   
312-919 A Chicago Zone 01-Wabash IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-920 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-921 A Chicago Zone 01-Calumet IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 0 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 1 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 2 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 3 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 4 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 5 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 6 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 7 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 8 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-921 9 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2008-09-01   
312-922 A Chicago Zone 01-Wabash IL CHCGILWBDS3  9329 AMERITECH ILLINOIS 358      
312-923 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 AMERITECH ILLINOIS 358      
312-924 A Chicago Zone 01-Franklin IL CHCGILCPDS5  4717 PAETEC COMMUNICATIONS, INC. - IL 358      
312-925 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-926 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-927 A Chicago Zone 01-Wabash IL CHCGILMFCM6  6529 T-MOBILE USA, INC. 358      
312-928 A Chicago Zone 01-Canal IL CHCGILCLDS0  9329 AMERITECH ILLINOIS 358      
312-928 0 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 1 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 2 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 3 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-928 4 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      

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

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