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
312-651 9 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-652 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-653 A Chicago Zone 01-Lakeshore IL CHCGILLRDS0  9329 AMERITECH ILLINOIS 358      
312-654 A Chicago Zone 01-Superior IL CHCGILSUDS0  9329 AMERITECH ILLINOIS 358      
312-655 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-656 A Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358      
312-657 A Chicago Zone 01-Wabash IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358      
312-658 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-659 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-660 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-661 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS2  9329 AMERITECH ILLINOIS 358      
312-661 0 Chicago Zone 01-Illinois Dearborn IL   9329 AMERITECH ILLINOIS 358      
312-661 1 Chicago Zone 01-Illinois Dearborn IL   9329 AMERITECH ILLINOIS 358      
312-661 2 Chicago Zone 01-Illinois Dearborn IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2013-02-08   
312-661 3 Chicago Zone 01-Illinois Dearborn IL   9329 AMERITECH ILLINOIS 358      
312-661 4 Chicago Zone 01-Illinois Dearborn IL   9329 AMERITECH ILLINOIS 358      
312-661 5 Chicago Zone 01-Illinois Dearborn IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-05-24   
312-661 6 Chicago Zone 01-Illinois Dearborn IL   6664 SPRINT SPECTRUM L.P. 358   2011-05-26   
312-661 7 Chicago Zone 01-Illinois Dearborn IL   9329 AMERITECH ILLINOIS 358      
312-661 8 Chicago Zone 01-Illinois Dearborn IL   9329 AMERITECH ILLINOIS 358      
312-661 9 Chicago Zone 01-Illinois Dearborn IL   9329 AMERITECH ILLINOIS 358      
312-662 A Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 AMERITECH ILLINOIS 358      
312-662 0 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2011-05-26   
312-662 1 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-662 2 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2008-06-27   
312-662 3 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2008-06-27   
312-662 4 Chicago Zone 01-Wabash IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-07-23   
312-662 5 Chicago Zone 01-Wabash IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-07-23   
312-662 6 Chicago Zone 01-Wabash IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-07-23   
312-662 7 Chicago Zone 01-Wabash IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-07-23   
312-662 8 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2008-06-27   
312-662 9 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2011-05-26   
312-663 A Chicago Zone 01-Wabash IL CHCGILWBDS3  9329 AMERITECH ILLINOIS 358      
312-664 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-665 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-666 A Chicago Zone 01-Monroe IL CHCGILMODS1  9329 AMERITECH ILLINOIS 358      
312-667 A Chicago Zone 01-Calumet IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 0 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 1 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 2 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 3 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 4 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 5 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 6 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 7 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 8 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-667 9 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-10-22   
312-668 A Chicago Zone 01-Calumet IL   425J CSC WIRELESS, LLC 358   2019-07-19   
312-668 0 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2019-10-04   
312-668 1 Chicago Zone 01-Calumet IL   138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2019-09-16   

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

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