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: 679

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-679 A Arlington Heights IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2026-02-26   
224-679 7 Arlington Heights IL   883K AHOI LLC 358   2026-10-06   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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