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
312-697 3 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 4 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 5 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 6 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 7 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 8 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 9 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2013-02-08   
312-698 A Chicago Zone 01-Canal IL EKGVILAADS1  7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 0 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 1 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 2 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 3 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-12-30   
312-698 4 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 5 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 6 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 7 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 8 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-698 9 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-699 A Hinsdale IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-701 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-701 0 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-701 1 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-701 2 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358   2010-10-27   
312-701 3 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358   2010-10-27   
312-701 4 Chicago Zone 01-Franklin IL   6664 SPRINT SPECTRUM L.P. 358   2011-05-26   
312-701 5 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-701 6 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-701 7 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-701 8 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-701 9 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-702 A Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-02-14   
312-702 0 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 1 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 2 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 3 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-02-14   
312-702 4 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-02-15   
312-702 5 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 6 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 7 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 8 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-04-04   
312-702 9 Chicago Zone 01-Calumet IL   6664 SPRINT SPECTRUM L.P. 358   2013-04-12   
312-703 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-704 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-705 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-706 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-707 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-709 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-709 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-11   

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Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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