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
312-868 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-10   
312-868 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-10   
312-868 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-10   
312-868 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-10   
312-868 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-10   
312-868 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-10   
312-868 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-02-10   
312-869 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-869 0 Chicago Zone 01-Canal IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-02-10   
312-869 1 Chicago Zone 01-Canal IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-02-10   
312-869 2 Chicago Zone 01-Canal IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-869 3 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-869 4 Chicago Zone 01-Canal IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-869 5 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-869 6 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-869 7 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-869 8 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-869 9 Chicago Zone 01-Canal IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-870 A Chicago Zone 01-Calumet IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 0 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-870 1 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 2 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 3 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 4 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 5 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 6 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 7 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-870 8 Chicago Zone 01-Calumet IL   9329 AMERITECH ILLINOIS 358   2000-11-03   
312-870 9 Chicago Zone 01-Calumet IL   4604 FIRST COMMUNICATIONS LLC - IL 358      
312-871 A Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-871 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-10-13   
312-871 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-10-13   
312-871 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-10-13   
312-871 3 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2016-06-25   
312-871 4 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-10-13   
312-871 5 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-10-13   
312-871 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-10-13   
312-871 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-10-13   
312-871 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-10-13   
312-871 9 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-11-23   
312-872 A Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2018-09-02   
312-872 0 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2018-11-06   
312-872 1 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-12-20   
312-872 2 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2018-10-21   
312-872 3 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-06-28   
312-872 4 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-06-28   
312-872 5 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2018-09-02   
312-872 6 Chicago Zone 01-Calumet IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-11-19   
312-872 7 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-06-28   
312-872 8 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2019-06-28   

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Last updated: Sat, 31 Oct 2020 19:28:10 UTC

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