Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Chicago Zone 01-Superior, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-202 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 0 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 1 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 2 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2011-01-14   
312-202 3 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2011-12-27   
312-202 4 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 5 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 6 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 7 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 8 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-202 9 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 0 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 1 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 2 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 3 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 4 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 5 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-204 6 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2008-10-31   
312-204 7 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2008-10-31   
312-204 8 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2008-10-31   
312-204 9 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-09-02   
312-255 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 0 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 1 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 2 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 3 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 4 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 5 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 6 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 7 CHCGILCLXOX  516C AT&T CORP. 358      
312-255 8 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-255 9 CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-266 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-274 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-280 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-302 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-306 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-335 A CHCGILSUDS0  9329 ILLINOIS BELL TEL CO 358      
312-337 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-397 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-417 A CHCGILSUDS0  9329 ILLINOIS BELL TEL CO 358      
312-440 A CHCGILSUDS0  9329 ILLINOIS BELL TEL CO 358      
312-445 A CHCGILSUDS2  9329 ILLINOIS BELL TEL CO 358      
312-445 0 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-10-09   
312-445 1 CHCGILMF4MD  5562 METROPCS, INC. 358   2016-02-15   
312-445 2 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2008-04-17   
312-445 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2008-04-16   
312-445 4 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2008-04-17   
312-445 5 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2008-04-17   

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

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