Local Calling Guide

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

NXX: 434

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-434 A Joliet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-01-11   
779-434 0 Joliet IL   224C ONVOY, LLC 358   2026-01-12   
779-434 7 Joliet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-01-11   
779-434 8 Joliet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-01-11   
779-434 9 Joliet IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-01-11   

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

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