Local Calling Guide

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Ferris, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-746 A FRRSILXCRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
217-746 0   224C ONVOY, LLC 977   2020-03-13   
217-746 1   495J STRATUS NETWORKS 977   2021-02-28   
217-746 2   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
217-746 3   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
217-746 4   342F MTC COMMUNICATIONS, INC. - IL 977   2018-03-18   
217-746 5   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
217-746 6   224C ONVOY, LLC 977   2021-04-09   
217-746 7   508J CENTURYLINK COMMUNICATIONS, LLC 977   2014-07-29   
217-746 8   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
217-746 9   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 977      
447-272 A MCMBILXDX9X  224C ONVOY, LLC 977      
447-272 2   224C ONVOY, LLC 977   2023-11-04   
447-272 4   624H ONVOY SPECTRUM, LLC 977   2024-04-27   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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