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
312-496 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-496 0 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-496 1 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-496 2 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-496 3 Chicago Zone 01-Canal IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2011-01-19   
312-496 4 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-496 5 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-496 6 Chicago Zone 01-Canal IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2007-03-13   
312-496 7 Chicago Zone 01-Canal IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2007-03-13   
312-496 8 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-496 9 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-497 A Chicago Zone 01-Wabash IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-498 A Chicago Zone 01-Wabash IL BRDVILBOCM0  6664 SPRINT SPECTRUM L.P. 358      
312-499 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-500 A Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 0 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 1 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 2 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 3 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 4 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 5 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 6 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 7 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 8 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-500 9 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-21   
312-501 A La Grange IL HCHLILMTCM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-501 0 La Grange IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-501 1 La Grange IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-501 5 La Grange IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-502 A Chicago Zone 01-Wabash IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-503 A Chicago Zone 01-Superior IL CHCGILABDS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-504 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-505 A Chicago Zone 01-Wabash IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-506 A Chicago Zone 01-Franklin IL CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358      
312-506 0 Chicago Zone 01-Franklin IL   5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 1 Chicago Zone 01-Franklin IL   5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 2 Chicago Zone 01-Franklin IL   5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 3 Chicago Zone 01-Franklin IL   5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 4 Chicago Zone 01-Franklin IL   5917 FIRST COMMUNICATIONS, LLC 358   2008-04-03   
312-506 5 Chicago Zone 01-Franklin IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2006-05-20   
312-506 6 Chicago Zone 01-Franklin IL   5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 7 Chicago Zone 01-Franklin IL   6664 SPRINT SPECTRUM L.P. 358   2005-01-15   
312-506 8 Chicago Zone 01-Franklin IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2006-06-04   
312-506 9 Chicago Zone 01-Franklin IL   5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-507 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-507 0 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-507 1 Chicago Zone 01-Franklin IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2011-02-07   
312-507 2 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-507 3 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-507 4 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      

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

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