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
312-899 3 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-899 4 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-899 5 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-899 6 Chicago Zone 01-Franklin IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-899 7 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-899 8 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-899 9 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-900 A Chicago Zone 01-Calumet IL   965H FRACTEL, LLC 358   2019-03-23   
312-900 0 Chicago Zone 01-Calumet IL   965H FRACTEL, LLC 358   2019-03-23   
312-900 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2019-03-24   
312-900 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2019-03-24   
312-900 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2019-03-24   
312-900 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2019-03-24   
312-900 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2019-03-24   
312-900 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2019-03-24   
312-900 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2019-03-24   
312-900 8 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-06-28   
312-900 9 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2019-05-18   
312-901 A Chicago Zone 01-Calumet IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358      
312-902 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-903 A Chicago Zone 01-Wabash IL CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-904 A Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 AMERITECH ILLINOIS 358      
312-905 A Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 AMERITECH ILLINOIS 358      
312-905 0 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-905 1 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-905 2 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-905 3 Chicago Zone 01-Franklin IL   6664 SPRINT SPECTRUM L.P. 358   2011-02-24   
312-905 4 Chicago Zone 01-Franklin IL   6664 SPRINT SPECTRUM L.P. 358   2011-02-24   
312-905 5 Chicago Zone 01-Franklin IL   6664 SPRINT SPECTRUM L.P. 358   2011-02-24   
312-905 6 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-905 7 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-905 8 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-905 9 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-906 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-906 0 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 1 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 2 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 3 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 4 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 5 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 6 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 7 Chicago Zone 01-Canal IL   224C ONVOY, LLC 358   2011-06-29   
312-906 8 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-906 9 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-907 A Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-908 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-909 A Chicago Zone 01-Wabash IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-910 A Chicago Zone 01-Calumet IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358      
312-912 A Chicago Zone 01-Canal IL CHCGILCLDS0  9329 AMERITECH ILLINOIS 358      
312-912 0 Chicago Zone 01-Canal IL   224C ONVOY, LLC 358   2016-02-15   

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

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