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
312-815 9 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-11-06   
312-816 A Hinsdale IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-816 0 Hinsdale IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-817 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 AMERITECH ILLINOIS 358      
312-818 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-818 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-11-14   
312-818 1 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2013-10-15   
312-818 2 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2013-10-15   
312-818 3 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2013-10-15   
312-818 4 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2013-10-04   
312-818 5 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2013-10-04   
312-818 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-10-04   
312-818 7 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-10-04   
312-818 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-03   
312-818 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2013-10-03   
312-819 A Chicago Zone 01-Lakeshore IL CHCGILLRDS0  9329 AMERITECH ILLINOIS 358      
312-820 A Chicago Zone 01-Wabash IL BURGILAJCM1  6630 USA MOBILITY WIRELESS, INC. 358     2019-12-30 
312-821 A Chicago Zone 01-Superior IL EGVGILIFDS1  7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-821 0 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 1 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 2 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 3 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 4 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 5 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 6 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 7 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 8 Chicago Zone 01-Superior IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-821 9 Chicago Zone 01-Superior IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-822 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS0  9329 AMERITECH ILLINOIS 358      
312-823 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 AMERITECH ILLINOIS 358      
312-823 0 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2006-06-27   
312-823 1 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-823 2 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2006-06-27   
312-823 3 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2006-05-22   
312-823 4 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2006-05-22   
312-823 5 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2006-05-22   
312-823 6 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2005-09-15   
312-823 7 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2005-09-15   
312-823 8 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2005-09-15   
312-823 9 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2005-09-15   
312-824 A Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-824 0 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2016-08-05   
312-824 1 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2016-08-05   
312-824 2 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2016-08-04   
312-824 3 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2016-08-04   
312-824 4 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2016-08-04   
312-824 5 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2016-08-05   
312-824 6 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2016-08-05   
312-824 7 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2016-08-05   
312-824 8 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2016-08-05   

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

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