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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-421 A Freeport IL   6265 UNITED STATES CELLULAR - IL 360   2025-05-12   
779-421 0 Freeport IL   6265 UNITED STATES CELLULAR - IL 360   2025-05-12   
779-421 1 Freeport IL   6265 UNITED STATES CELLULAR - IL 360   2025-05-12   
779-421 2 Freeport IL   6265 UNITED STATES CELLULAR - IL 360   2025-05-12   
779-421 3 Freeport IL   6265 UNITED STATES CELLULAR - IL 360   2025-05-12   
779-421 4 Freeport IL   6265 UNITED STATES CELLULAR - IL 360   2025-05-12   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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