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
312-947 7 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2010-12-18   
312-947 8 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2010-12-18   
312-947 9 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2010-12-18   
312-948 A Chicago Zone 01-Monroe IL CHCGILWUDS0  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-948 0 Chicago Zone 01-Monroe IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-948 1 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358   2002-06-03   
312-948 2 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358   2002-06-03   
312-948 3 Chicago Zone 01-Monroe IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-06-02   
312-948 4 Chicago Zone 01-Monroe IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-06-03   
312-948 5 Chicago Zone 01-Monroe IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-948 6 Chicago Zone 01-Monroe IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-06-03   
312-948 7 Chicago Zone 01-Monroe IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-06-03   
312-948 8 Chicago Zone 01-Monroe IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2001-01-18   
312-948 9 Chicago Zone 01-Monroe IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-08-06   
312-949 A Chicago Zone 01-Calumet IL CHCGILCADS1  9329 AMERITECH ILLINOIS 358      
312-951 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-951 0 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 1 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 2 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 3 Chicago Zone 01-Superior IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-01-03   
312-951 4 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 5 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 6 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 7 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 8 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-951 9 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-952 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-953 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-954 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-955 A Chicago Zone 01-Illinois Dearborn IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-956 A Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-956 0 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2014-11-15   
312-956 1 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2014-11-15   
312-956 2 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 3 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 4 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 5 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 6 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 7 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 8 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-956 9 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2014-10-29   
312-957 A Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 AMERITECH ILLINOIS 358      
312-957 0 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-957 1 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-957 2 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-957 3 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-957 4 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-07-03   
312-957 5 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-07-03   
312-957 6 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-07-03   
312-957 7 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-07-03   

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

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