Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 779 [Rate centres in NPA 779] [Dial plan for NPA 779]

NXX: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-303 A Plainfield IL CHCGILWUJMD  073H TELNYX LLC 358      
779-303 0 Plainfield IL   224C ONVOY, LLC 358   2018-12-27   
779-303 1 Plainfield IL   073H TELNYX LLC 358   2017-04-24   
779-303 2 Plainfield IL   224C ONVOY, LLC 358   2020-10-23   
779-303 3 Plainfield IL   224C ONVOY, LLC 358   2020-10-23   
779-303 4 Plainfield IL   6529 T-MOBILE USA, INC. 358   2024-11-25   
779-303 5 Plainfield IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2022-10-01   
779-303 6 Plainfield IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2022-11-17   
779-303 7 Plainfield IL   224C ONVOY, LLC 358   2019-07-07   
779-303 8 Plainfield IL   224C ONVOY, LLC 358   2019-07-07   
779-303 9 Plainfield IL   224C ONVOY, LLC 358   2019-07-07   

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

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