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
312-683 7 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-683 8 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-683 9 Chicago Zone 01-Franklin IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2011-12-27   
312-684 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-684 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-684 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-685 A Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-685 0 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358   2003-06-03   
312-685 1 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-685 2 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-685 3 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358   2003-06-03   
312-685 4 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-685 5 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-685 6 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-685 7 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-685 8 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-685 9 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-686 A Chicago Zone 01-Calumet IL   910F AIRUS, INC. - IL 358      
312-686 0 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 1 Chicago Zone 01-Calumet IL   910F AIRUS, INC. - IL 358   2017-01-27   
312-686 2 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 3 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 4 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 5 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 6 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 7 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 8 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-686 9 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-01-28   
312-687 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-687 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-687 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-11-13   
312-688 A Chicago Zone 01-Calumet IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358      
312-689 A Chicago Zone 01-Wabash IL CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-690 A Chicago Zone 01-Calumet IL   946G RCLEC, INC. - IL 358      

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

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