Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 224 [Rate centres in NPA 224] [Dial plan for NPA 224]

NXX: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-390 A Round Lake IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
224-390 0 Round Lake IL   224C ONVOY, LLC 358   2023-08-12   
224-390 1 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-08-21   
224-390 2 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-08-21   
224-390 3 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-08-21   
224-390 4 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-08-21   
224-390 5 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-03-31   
224-390 6 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-03-31   
224-390 7 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-03-31   
224-390 8 Round Lake IL   6529 T-MOBILE USA, INC. 358   2022-03-31   
224-390 9 Round Lake IL   6529 T-MOBILE USA, INC. 358   2021-09-06   

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

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