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
312-778 5 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-06-09   
312-778 6 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-06-09   
312-778 7 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-06-09   
312-778 8 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-06-09   
312-778 9 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2015-06-12   
312-779 A Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-07-12   
312-779 0 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-07-12   
312-779 1 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-07-12   
312-779 2 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-07-15   
312-779 3 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2019-07-13   
312-779 4 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2019-07-28   
312-779 5 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2019-07-28   
312-779 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-08-02   
312-779 7 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2019-07-28   
312-779 8 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-07-13   
312-779 9 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2019-07-28   
312-780 A Chicago Zone 01-Wabash IL EGVGILIFDS1  7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 0 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 1 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 2 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 3 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 4 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 5 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 6 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 7 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 8 Chicago Zone 01-Wabash IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-780 9 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-07   
312-781 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 AMERITECH ILLINOIS 358      
312-782 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 AMERITECH ILLINOIS 358      
312-783 A Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-783 0 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 1 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 2 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 3 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 4 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 5 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 6 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 7 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 8 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-783 9 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-09-29   
312-784 A Chicago Zone 01-Calumet IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 0 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 1 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 2 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 3 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 4 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 5 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 6 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 7 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   
312-784 8 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-09-02   

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

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