Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 633

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-633 A Hartsburg IL LNCLILXCDMD  624H ONVOY SPECTRUM, LLC 366      
217-633 1 Hartsburg IL   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 366   2010-03-15   
217-633 3 Hartsburg IL   145J TERRA NOVA TELECOM INC. 366   2025-05-27   
217-633 4 Hartsburg IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 366   2005-03-24   
217-633 7 Hartsburg IL   508J CENTURYLINK COMMUNICATIONS, LLC 366   2014-08-13   
217-633 8 Hartsburg IL   624H ONVOY SPECTRUM, LLC 366   2024-04-08   
217-633 9 Hartsburg IL   490J DISH WIRELESS, LLC 366   2023-11-13   

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

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