Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Chicago Zone 02-Rogers Park, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-262 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-273 A EVTNILEVDS0  9329 ILLINOIS BELL TEL CO 358      
773-273 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-06-26   
773-273 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-06-26   
773-273 2 EVTNILEVDS0  9329 ILLINOIS BELL TEL CO 358      
773-273 3 EVTNILEVDS0  9329 ILLINOIS BELL TEL CO 358      
773-273 4 EVTNILEVDS0  9329 ILLINOIS BELL TEL CO 358      
773-273 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2006-07-09   
773-273 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-273 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-04-10   
773-273 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2009-12-07   
773-273 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-12   
773-274 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-338 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-381 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-465 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-508 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-743 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-761 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-764 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      
773-807 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-856 A CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
773-973 A CHCGILRPDS0  9329 ILLINOIS BELL TEL CO 358      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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