Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Sibley, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-745 A SBLYILXCRS1  1015 FRONTIER NORTH, INC. - IL 370      
217-745 1   1015 FRONTIER NORTH, INC. - IL 370      
217-745 2   1015 FRONTIER NORTH, INC. - IL 370      
217-745 3   073H TELNYX LLC 370   2020-07-20   
217-745 4   593K MCC TELEPHONY LLC 370   2016-06-02   
217-745 5   224C ONVOY, LLC 370   2018-10-07   
217-745 6   224C ONVOY, LLC 370   2019-07-05   
217-745 7   508J CENTURYLINK COMMUNICATIONS, LLC 370   2016-06-16   
217-745 8   224C ONVOY, LLC 370   2019-07-05   
447-627 A CHMPILCPOMD  224C ONVOY, LLC 370      
447-627 0   624H ONVOY SPECTRUM, LLC 370   2024-05-18   
447-627 6   224C ONVOY, LLC 370   2021-06-17   

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

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