Local Calling Guide

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NPA: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 448

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-448 A Congerville IL CGVLILXDRS0  1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 368      
309-448 1 Congerville IL   1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 368      
309-448 2 Congerville IL   1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 368      
309-448 3 Congerville IL   624H ONVOY SPECTRUM, LLC 368   2021-11-13   
309-448 4 Congerville IL   224C ONVOY, LLC 368   2018-08-02   
309-448 6 Congerville IL   624H ONVOY SPECTRUM, LLC 368   2021-06-28   
309-448 7 Congerville IL   624H ONVOY SPECTRUM, LLC 368   2021-11-13   
309-448 8 Congerville IL   145J TERRA NOVA TELECOM INC. 368   2025-06-01   

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

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