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
312-871 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   
312-872 9 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-12-20   
312-873 A Chicago Zone 01-Canal IL EGVGILIFDS1  7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
312-874 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-874 0 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-22   
312-874 1 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-22   
312-874 2 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-22   
312-874 3 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-22   
312-874 4 Chicago Zone 01-Calumet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-22   
312-874 5 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-07-28   
312-874 6 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-07-28   
312-874 7 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2015-07-28   
312-874 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-20   
312-874 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2015-07-20   
312-875 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-876 A Chicago Zone 01-Canal IL CHCGILCLDS0  9329 AMERITECH ILLINOIS 358      
312-877 A Chicago Zone 01-Calumet IL   516C AT&T CORP. 358      
312-877 0 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-09-13   
312-877 1 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-09-13   
312-877 2 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-09-13   
312-877 3 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-09-13   
312-877 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-09-19   
312-877 5 Chicago Zone 01-Calumet IL   516C AT&T CORP. 358   2014-09-11   
312-877 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-09-19   
312-877 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-09-19   
312-877 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-09-19   
312-877 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2014-09-19   
312-878 A Chicago Zone 01-Calumet IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-03-27   
312-878 0 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-05-10   
312-878 1 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-06-09   
312-878 2 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-06-12   
312-878 3 Chicago Zone 01-Calumet IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-03-27   

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

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