Local Calling Guide

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

NXX: 443

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-443 A Grand Detour IL   318J COMCAST IP PHONE, LLC 364   2026-03-21   
779-443 4 Grand Detour IL   318J COMCAST IP PHONE, LLC 364   2026-03-21   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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