Local Calling Guide

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Thomas (Bureau), IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
779-322 A DKLBILXAXCX  495J STRATUS NETWORKS 364      
779-322 1   495J STRATUS NETWORKS 364   2020-11-18   
779-322 2   224C ONVOY, LLC 364   2021-02-12   
779-322 3   624H ONVOY SPECTRUM, LLC 364   2023-07-07   
815-542 A THMSILXARS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-542 0   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-542 1   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-542 2   224C ONVOY, LLC 364   2018-10-01   
815-542 3   224C ONVOY, LLC 364   2019-09-07   
815-542 4   073H TELNYX LLC 364   2020-07-20   
815-542 5   508J CENTURYLINK COMMUNICATIONS, LLC 364   2014-08-15   
815-542 6   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-542 7   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-542 8   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      
815-542 9   1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      

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

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