Local Calling Guide

Area code/prefix search

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Chicago Zone 01-Franklin, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-458 A CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 0 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 1 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 2 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 3 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 4 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-02-28   
312-458 6 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 7 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 8 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-458 9 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-460 A CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-460 0 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-460 1 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-460 2 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-460 3 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2009-09-04   
312-460 4 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-460 5 CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2005-10-03   
312-460 6 CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2005-10-03   
312-460 7 CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358   2005-10-03   
312-460 8 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-460 9 CHCGILFRDS1  9329 ILLINOIS BELL TEL CO 358      
312-462 A CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-462 0 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-12-04   
312-462 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-20   
312-462 2 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-462 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-01   
312-462 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-01   
312-462 5 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-462 6 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-462 7 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-462 8 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-462 9 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2009-06-16   
312-499 A CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-506 A CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358      
312-506 0 CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 1 CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 2 CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 3 CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 4 CHCGILAEDS3  5917 FIRST COMMUNICATIONS, LLC 358   2008-04-03   
312-506 5 CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2006-05-20   
312-506 6 CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-506 7 CHCGILMF4MD  5562 METROPCS, INC. 358   2005-01-15   
312-506 8 CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2006-06-04   
312-506 9 CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2004-07-15   
312-507 A CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-507 0 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-507 1 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2011-02-07   
312-507 2 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      
312-507 3 CHCGILFRDS4  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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