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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-640 A Fox Lake IL   224C ONVOY, LLC 358   2025-03-29   
224-640 0 Fox Lake IL   224C ONVOY, LLC 358   2025-03-29   
224-640 1 Fox Lake IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-06-12   
224-640 9 Fox Lake IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-10-10   

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

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