Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Chicago Zone 06-Lafayette, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-869 5 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-09-21   
773-869 6 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-07-17   
773-869 7 CHCGIL24DS6  224C ONVOY, LLC 358   2015-12-18   
773-869 8 CHCGILLADS0  9329 ILLINOIS BELL TEL CO 358      
773-869 9 CHCGILLADS0  9329 ILLINOIS BELL TEL CO 358      
773-890 A CHCGILLADS0  9329 ILLINOIS BELL TEL CO 358      
773-927 A CHCGILLADS0  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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