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
312-363 4 Chicago Zone 01-Monroe IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-363 5 Chicago Zone 01-Monroe IL   8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-363 6 Chicago Zone 01-Monroe IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2004-06-06   
312-363 7 Chicago Zone 01-Monroe IL   6529 T-MOBILE USA, INC. 358   2004-07-15   
312-363 8 Chicago Zone 01-Monroe IL   6529 T-MOBILE USA, INC. 358   2004-07-15   
312-363 9 Chicago Zone 01-Monroe IL   6529 T-MOBILE USA, INC. 358   2004-07-15   
312-364 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-365 A Chicago Zone 01-Wabash IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358      
312-366 A Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-366 0 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-05-16   
312-366 1 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-05-16   
312-366 2 Chicago Zone 01-Calumet IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2016-04-12   
312-366 3 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2016-04-16   
312-366 4 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-05-16   
312-366 5 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-05-16   
312-366 6 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-04-03   
312-366 7 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-04-03   
312-366 8 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-04-03   
312-366 9 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-04-03   
312-367 A La Grange IL BURGILAJCM0  6630 USA MOBILITY WIRELESS, INC. 358      
312-368 A Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 AMERITECH ILLINOIS 358      
312-369 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-369 0 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-369 1 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 2 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 3 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 4 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 5 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 6 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 7 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 8 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358   2008-04-18   
312-369 9 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-370 A Chicago Zone 01-Wabash IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358      
312-371 A Chicago Zone 01-Wabash IL BRDVILBOCM0  6664 SPRINT SPECTRUM L.P. 358      
312-372 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-373 A Chicago Zone 01-Lakeshore IL CHCGILABDS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 0 Chicago Zone 01-Lakeshore IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-373 1 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 2 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 3 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 4 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 5 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 6 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 7 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 8 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-373 9 Chicago Zone 01-Lakeshore IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-374 A Chicago Zone 01-Lakeshore IL CHCGILLRDS0  9329 AMERITECH ILLINOIS 358      
312-374 0 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358      
312-374 1 Chicago Zone 01-Lakeshore IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2012-12-31   
312-374 2 Chicago Zone 01-Lakeshore IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2013-01-04   

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

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