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
312-646 4 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 5 Chicago Zone 01-Calumet IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 6 Chicago Zone 01-Calumet IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2008-02-05   
312-646 7 Chicago Zone 01-Calumet IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2008-02-05   
312-646 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2008-06-27   
312-646 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2008-06-27   
312-647 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-647 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-08-19   
312-647 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-08-19   
312-647 2 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2013-07-16   
312-647 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-08-19   
312-647 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-15   
312-647 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-07-15   
312-648 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-648 0 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 1 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 2 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 3 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 4 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 5 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 6 Chicago Zone 01-Canal IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2011-06-20   
312-648 7 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 8 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-648 9 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-649 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-650 A Chicago Zone 01-Lakeshore IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 0 Chicago Zone 01-Lakeshore IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 1 Chicago Zone 01-Lakeshore IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 2 Chicago Zone 01-Lakeshore IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 3 Chicago Zone 01-Lakeshore IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 4 Chicago Zone 01-Lakeshore IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 5 Chicago Zone 01-Lakeshore IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 6 Chicago Zone 01-Lakeshore IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-650 7 Chicago Zone 01-Lakeshore IL   7056 XO ILLINOIS, INC. 358   2004-11-27   
312-650 8 Chicago Zone 01-Lakeshore IL   7056 XO ILLINOIS, INC. 358   2004-11-27   
312-650 9 Chicago Zone 01-Lakeshore IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-651 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-651 0 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-651 1 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-651 2 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-651 3 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-12-30   
312-651 4 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-06-09   
312-651 5 Chicago Zone 01-Canal IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2006-06-22   
312-651 6 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-06-09   
312-651 7 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-651 8 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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