Local Calling Guide

Area code/prefix search

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Hartsburg, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-633 A LNCLILXCDMD  624H ONVOY SPECTRUM, LLC 366      
217-633 1   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 366   2010-03-15   
217-633 3   145J TERRA NOVA TELECOM INC. 366   2025-05-27   
217-633 4   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 366   2005-03-24   
217-633 7   508J CENTURYLINK COMMUNICATIONS, LLC 366   2014-08-13   
217-633 8   624H ONVOY SPECTRUM, LLC 366   2024-04-08   
217-633 9   490J DISH WIRELESS, LLC 366   2023-11-13   
217-642 A HTBGILXCRS0  1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 366      
217-642 0   145J TERRA NOVA TELECOM INC. 366   2026-01-04   
217-642 1   1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 366      
217-642 2   224C ONVOY, LLC 366   2024-01-01   
217-642 5   1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 366      

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

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