Local Calling Guide

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Chesterfield-Rockbridge, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
618-753 A CHFDILXERS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 520      
618-753 0 CHFDILXERS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 520      
618-753 1 CHFDILXERS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 520      
618-753 2 CHFDILXERS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 520      
618-753 3 CHFDILXERS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 520      
618-753 4 COVLILCQXRX  224C ONVOY, LLC 520   2019-07-29   
618-753 5 COVLILCQXRX  224C ONVOY, LLC 520   2018-07-29   
618-753 6 COVLILCQXRX  224C ONVOY, LLC 520   2019-07-29   
618-753 7 COVLILCQXEX  508J CENTURYLINK COMMUNICATIONS, LLC 520   2016-01-21   
618-753 8 COVLILCQXIX  984E BANDWIDTH.COM CLEC, LLC - IL 520   2020-04-12   
618-753 9 CHFDILXERS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 520      
730-737 A STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-03-02   
730-737 0 STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-03-02   
730-737 7   145J TERRA NOVA TELECOM INC. 520   2025-06-01   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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