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 PRRGILXLDS0  9329 ILLINOIS BELL TEL CO 358      
773-867 9 ELGNILOTGT5  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 CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 1 CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 2 CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 3 EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2006-11-17   
847-600 4 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2011-09-17   
847-600 5 CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 6 CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 7 CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 8 CHCGILNEDS0  9329 ILLINOIS BELL TEL CO 358      
847-600 9 CHCGILGMDS7  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: Sun, 17 May 2026 03:26:51 UTC

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