Local Calling Guide

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Chicago Zone 01-Wabash, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-351 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 6 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2010-04-12   
312-351 7 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2010-04-12   
312-351 8 CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2010-04-12   
312-351 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-353 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-356 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-359 A LBRDILGOAMD  6630 SPOK, INC. 358      
312-360 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-362 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-365 A LBRDILGOAMD  6630 SPOK, INC. 358      
312-369 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-369 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-369 1 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 2 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 3 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 4 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 5 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 6 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 7 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 8 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358   2008-04-18   
312-369 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-370 A LBRDILGOAMD  6630 SPOK, INC. 358      
312-375 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
312-385 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-385 1 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 2 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 3 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 4 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 5 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 6   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2025-09-25   
312-385 7 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 8 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-385 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-06-23   
312-386 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 0   6529 T-MOBILE USA, INC. 358   2007-09-13   
312-386 1 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 2 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 3 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 4 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-386 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-08-06   
312-386 6 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2011-07-08   
312-386 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-09-26   
312-386 8 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2005-08-19   
312-386 9 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-387 A LBRDILGOAMD  6630 SPOK, INC. 358      
312-389 A LBRDILGOAMD  6630 SPOK, INC. 358      
312-390 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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