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
312-568 2 Chicago Zone 01-Canal IL   5917 FIRST COMMUNICATIONS, LLC 358   2005-11-17   
312-568 3 Chicago Zone 01-Canal IL   5917 FIRST COMMUNICATIONS, LLC 358   2005-11-17   
312-568 4 Chicago Zone 01-Canal IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2006-04-27   
312-568 5 Chicago Zone 01-Canal IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2005-10-02   
312-568 6 Chicago Zone 01-Canal IL   6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-568 7 Chicago Zone 01-Canal IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2006-12-13   
312-568 8 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-568 9 Chicago Zone 01-Canal IL   6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-569 A Chicago Zone 01-Monroe IL CHCGILMODS1  9329 AMERITECH ILLINOIS 358      
312-569 0 Chicago Zone 01-Monroe IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-569 1 Chicago Zone 01-Monroe IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2002-06-24   
312-569 2 Chicago Zone 01-Monroe IL   5562 METRO PCS, INC. 358   2017-02-05   
312-569 3 Chicago Zone 01-Monroe IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-06-24   
312-569 4 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358   2002-06-24   
312-569 5 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-569 6 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-569 7 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-569 8 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-569 9 Chicago Zone 01-Monroe IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-570 A Chicago Zone 01-Calumet IL CHCGILCADS0  9329 AMERITECH ILLINOIS 358      
312-571 A Chicago Zone 01-Wabash IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358      
312-572 A Chicago Zone 01-Monroe IL CHCGILMODS0  9329 AMERITECH ILLINOIS 358      
312-572 0 Chicago Zone 01-Monroe IL   5562 METRO PCS, INC. 358   2017-02-05   
312-572 1 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-572 2 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-572 3 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-572 4 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-572 5 Chicago Zone 01-Monroe IL   9329 AMERITECH ILLINOIS 358      
312-572 6 Chicago Zone 01-Monroe IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2009-09-29   
312-572 7 Chicago Zone 01-Monroe IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2007-12-14   
312-572 8 Chicago Zone 01-Monroe IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2009-09-29   
312-572 9 Chicago Zone 01-Monroe IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-573 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-574 A Chicago Zone 01-Franklin IL CHCGILFRDS1  9329 AMERITECH ILLINOIS 358      
312-574 0 Chicago Zone 01-Franklin IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-574 1 Chicago Zone 01-Franklin IL   5447 ACCESS ONE, INC. - IL 358   2010-07-15   
312-574 2 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-574 3 Chicago Zone 01-Franklin IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-01-16   
312-574 4 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-574 5 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-574 6 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-574 7 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-574 8 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-574 9 Chicago Zone 01-Franklin IL   9329 AMERITECH ILLINOIS 358      
312-575 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-576 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-577 A Chicago Zone 01-Wabash IL EGVGILIFDS1  7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-578 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-579 A Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-09-08   
312-579 0 Chicago Zone 01-Calumet IL   073H TELNYX LLC 358   2017-09-09   

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

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