Local Calling Guide

Area code/prefix search

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NPA: 779 [Rate centres in NPA 779] [Dial plan for NPA 779]

NXX: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-257 A Wilmington IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
779-257 0 Wilmington IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-09-07   
779-257 1 Wilmington IL   073H TELNYX LLC 358   2019-03-01   
779-257 2 Wilmington IL   224C ONVOY, LLC 358   2018-09-16   
779-257 3 Wilmington IL   224C ONVOY, LLC 358   2021-02-12   
779-257 4 Wilmington IL   224C ONVOY, LLC 358   2021-02-12   
779-257 5 Wilmington IL   224C ONVOY, LLC 358   2021-02-12   
779-257 6 Wilmington IL   624H ONVOY SPECTRUM, LLC 358   2024-04-28   
779-257 7 Wilmington IL   224C ONVOY, LLC 358   2024-08-14   
779-257 8 Wilmington IL   224C ONVOY, LLC 358   2024-03-08   
779-257 9 Wilmington IL   495J STRATUS NETWORKS 358   2020-10-03   

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

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