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
312-635 5 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-635 6 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-635 7 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-635 8 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-635 9 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-636 A Chicago Zone 01-Wabash IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-637 A Chicago Zone 01-Canal IL CHCGILABDS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-637 0 Chicago Zone 01-Canal IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-07   
312-637 1 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 2 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 3 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 4 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 5 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 6 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 7 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-637 8 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-637 9 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-638 A Chicago Zone 01-Canal IL CHCGILABDS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-638 0 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-638 1 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 2 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 3 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 4 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 5 Chicago Zone 01-Canal IL   138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2015-04-24   
312-638 6 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 7 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-638 8 Chicago Zone 01-Canal IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-638 9 Chicago Zone 01-Canal IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-639 A Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 0 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 1 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 2 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 3 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 4 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 5 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 6 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 7 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 8 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-639 9 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-12-03   
312-640 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-641 A Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 AMERITECH ILLINOIS 358      
312-642 A Chicago Zone 01-Superior IL CHCGILSUDS2  9329 AMERITECH ILLINOIS 358      
312-643 A Chicago Zone 01-Superior IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINOIS, INC. - IL 358      
312-644 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS2  9329 AMERITECH ILLINOIS 358      
312-645 A Chicago Zone 01-Illinois Dearborn IL CHCGILIDDS2  9329 AMERITECH ILLINOIS 358      
312-646 A Chicago Zone 01-Calumet IL CHCGILABDS0  7721 BROADWING COMMUNICATIONS, LLC - IL 358      
312-646 0 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-646 1 Chicago Zone 01-Calumet IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 2 Chicago Zone 01-Calumet IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2007-10-01   
312-646 3 Chicago Zone 01-Calumet IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-01   

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

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