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
312-468 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-08-28   
312-468 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-08-28   
312-468 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-08-28   
312-469 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-469 0 Chicago Zone 01-Superior IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-469 1 Chicago Zone 01-Superior IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-08-16   
312-469 2 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-469 3 Chicago Zone 01-Superior IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2017-01-02   
312-469 4 Chicago Zone 01-Superior IL   9329 AMERITECH ILLINOIS 358      
312-469 5 Chicago Zone 01-Superior IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-08-16   
312-469 6 Chicago Zone 01-Superior IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-08-16   
312-469 7 Chicago Zone 01-Superior IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-08-28   
312-469 8 Chicago Zone 01-Superior IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-07-01   
312-469 9 Chicago Zone 01-Superior IL   6664 SPRINT SPECTRUM L.P. 358   2004-10-01   
312-470 A Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 0 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 1 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 2 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 3 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 4 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 5 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 6 Chicago Zone 01-Monroe IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-20   
312-470 7 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 8 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 9 Chicago Zone 01-Monroe IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-471 A Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-471 0 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2015-08-12   
312-471 1 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2015-08-12   
312-471 2 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2015-08-22   
312-471 3 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2015-08-10   
312-471 4 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2015-08-10   
312-471 5 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2015-08-10   
312-471 6 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2015-08-22   
312-471 7 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2015-08-22   
312-471 8 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2015-08-22   
312-471 9 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2015-08-12   
312-472 A Chicago Zone 01-Lakeshore IL CHCGILLRDS0  9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 0 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 1 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 2 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 3 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 4 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 5 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 6 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 7 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 8 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-472 9 Chicago Zone 01-Lakeshore IL   9329 AMERITECH ILLINOIS 358   2005-12-18   
312-473 A Chicago Zone 01-Calumet IL OKBRILDODS0  259E YMAX COMMUNICATIONS CORP. - IL 358      
312-473 0 Chicago Zone 01-Calumet IL   259E YMAX COMMUNICATIONS CORP. - IL 358   2007-01-06   
312-473 1 Chicago Zone 01-Calumet IL   259E YMAX COMMUNICATIONS CORP. - IL 358   2007-01-06   

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

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