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
312-728 5 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-04-19   
312-728 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-04-19   
312-728 7 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-12   
312-728 8 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-07-12   
312-728 9 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2018-07-08   
312-729 A Chicago Zone 01-Lakeshore IL CHCGILLRDS0  9329 AMERITECH ILLINOIS 358      
312-730 A Chicago Zone 01-Wabash IL CHCGILCLDSC  7421 AT&T LOCAL 358      
312-730 0 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2007-07-27   
312-730 1 Chicago Zone 01-Wabash IL   7421 AT&T LOCAL 358      
312-730 2 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2007-07-27   
312-730 3 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 4 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 5 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 6 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 7 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 8 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2005-03-19   
312-730 9 Chicago Zone 01-Wabash IL   7421 AT&T LOCAL 358      
312-731 A Chicago Zone 01-Calumet IL CHCGILMFCM6  6529 T-MOBILE USA, INC. 358      
312-731 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2005-08-01   
312-731 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2004-02-09   
312-731 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2004-02-09   
312-731 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2004-12-06   
312-731 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2004-12-06   
312-731 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2005-07-11   
312-731 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2005-07-11   
312-731 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2004-07-15   
312-731 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2004-07-15   
312-731 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2005-08-10   
312-732 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 AMERITECH ILLINOIS 358      
312-733 A Chicago Zone 01-Monroe IL CHCGILMODS1  9329 AMERITECH ILLINOIS 358      
312-734 A Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-734 0 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2015-12-05   
312-734 1 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-11-25   
312-734 2 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 3 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 4 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 5 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 7 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 8 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 9 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2015-12-05   
312-735 A Chicago Zone 04-Humboldt IL   6664 SPRINT SPECTRUM L.P. 358      
312-736 A Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-12-22   
312-736 0 Chicago Zone 01-Calumet IL   073H TELNYX LLC 358   2018-07-05   
312-736 1 Chicago Zone 01-Calumet IL   5447 ACCESS ONE, INC. - IL 358   2018-03-16   
312-736 2 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-07-26   
312-736 3 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2018-08-17   
312-736 4 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2018-08-17   
312-736 5 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-12-22   
312-736 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-12-22   

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

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