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
312-545 4 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358      
312-545 5 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358      
312-545 6 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358      
312-545 7 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358      
312-545 8 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358      
312-545 9 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358      
312-546 A Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-12-28   
312-546 0 Chicago Zone 01-Wabash IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2010-10-27   
312-546 1 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358   2004-01-11   
312-546 2 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358   2004-10-22   
312-546 3 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-04-01   
312-546 4 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-546 5 Chicago Zone 01-Wabash IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS LLC - IL 358   2004-11-06   
312-546 6 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-04-01   
312-546 7 Chicago Zone 01-Wabash IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2009-04-18   
312-546 8 Chicago Zone 01-Wabash IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2009-04-18   
312-546 9 Chicago Zone 01-Wabash IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2009-04-18   
312-547 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-547 0 Chicago Zone 01-Wabash IL ARLHILJQBMD  6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-547 1 Chicago Zone 01-Wabash IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-09-25   
312-547 2 Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 3 Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 4 Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 5 Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 6 Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 7 Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 8 Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 9 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-548 A Chicago Zone 01-Calumet IL EKGVILAADS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-548 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-548 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-548 2 Chicago Zone 01-Calumet IL EKGVILAADS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-548 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-548 4 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2007-10-20   
312-548 5 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2007-10-20   
312-548 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-548 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-548 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-548 9 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-20   
312-549 A Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-549 0 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2015-12-19   
312-549 1 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2015-12-19   
312-549 2 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METRO PCS, INC. 358   2015-12-19   
312-549 3 Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-23   
312-549 4 Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-23   
312-549 5 Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-23   
312-549 6 Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-23   
312-549 7 Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-23   
312-549 8 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-12-31   
312-549 9 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-12-31   

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Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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