Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-784 A VRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 977      
309-784 0   508J CENTURYLINK COMMUNICATIONS, LLC 977   2014-07-29   
309-784 1   224C ONVOY, LLC 977   2020-03-13   
309-784 2   1015 FRONTIER NORTH, INC. - IL 977      
309-784 3   224C ONVOY, LLC 977   2021-04-09   
309-784 4   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977   2005-04-14   
309-784 7   624H ONVOY SPECTRUM, LLC 977   2023-07-29   
309-784 8   1015 FRONTIER NORTH, INC. - IL 977      
309-784 9   495J STRATUS NETWORKS 977   2021-02-28   

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

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