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
312-701 9 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-702 A Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-702 0 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 1 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 2 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 3 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-02-14   
312-702 4 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2013-02-15   
312-702 5 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 6 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 7 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-03-04   
312-702 8 Chicago Zone 01-Calumet IL CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-04-04   
312-702 9 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2013-04-12   
312-703 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-704 A Chicago Zone 01-Franklin IL CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-705 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-706 A Chicago Zone 01-Wabash IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-707 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-708 A Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 0 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 1 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 2 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 3 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 4 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 5 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 6 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 7 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 8 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-708 9 Chicago Zone 01-Calumet IL   624H ONVOY SPECTRUM, LLC 358   2024-04-24   
312-709 A Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358      
312-709 0 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 1 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 2 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 3 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 4 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 5 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 6 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 7 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 8 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-709 9 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-07-11   
312-710 A Chicago Zone 01-Monroe IL CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-712 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-713 A Chicago Zone 01-Wabash IL CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-714 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-714 0 Chicago Zone 01-Canal IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2006-10-01   
312-714 1 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-714 2 Chicago Zone 01-Canal IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2006-08-18   
312-714 3 Chicago Zone 01-Canal IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2006-08-18   
312-714 4 Chicago Zone 01-Canal IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2006-08-18   
312-714 5 Chicago Zone 01-Canal IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2006-09-18   
312-714 6 Chicago Zone 01-Canal IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2006-09-18   

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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