Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Chicago Zone 03-Newcastle, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-867 8   9329 ILLINOIS BELL TEL CO 358      
773-867 9   6529 T-MOBILE USA, INC. 358   2006-03-18   
773-934 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-968 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
847-588 A CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 A CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 0   9329 ILLINOIS BELL TEL CO 358      
847-600 1   9329 ILLINOIS BELL TEL CO 358      
847-600 2   9329 ILLINOIS BELL TEL CO 358      
847-600 3   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2006-11-17   
847-600 4   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2011-09-17   
847-600 5   9329 ILLINOIS BELL TEL CO 358      
847-600 6   9329 ILLINOIS BELL TEL CO 358      
847-600 7   9329 ILLINOIS BELL TEL CO 358      
847-600 8   9329 ILLINOIS BELL TEL CO 358      
847-600 9   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-04-21   
847-647 A CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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