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   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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