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: 366

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-366 A Rockford IL RCFRILRTXMY  321J HD CARRIER LLC 360      
779-366 0 Rockford IL   6265 UNITED STATES CELLULAR - IL 360   2024-10-31   
779-366 1 Rockford IL RCFRILRTXGY  6265 UNITED STATES CELLULAR - IL 360   2024-10-31   
779-366 8 Rockford IL RCFRILRTXMY  321J HD CARRIER LLC 360   2023-05-11   
779-366 9 Rockford IL RCFRILRTXMY  321J HD CARRIER LLC 360   2023-05-11   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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