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: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-621 A Waukegan IL CHCGILWUXMD  490J DISH WIRELESS, LLC 358   2024-12-26   
224-621 0 Waukegan IL CHCGILWUXMD  490J DISH WIRELESS, LLC 358   2024-12-26   
224-621 1 Waukegan IL CHCGILWUXMD  490J DISH WIRELESS, LLC 358   2025-04-19   
224-621 3 Waukegan IL   624H ONVOY SPECTRUM, LLC 358   2025-05-12   
224-621 4 Waukegan IL   624H ONVOY SPECTRUM, LLC 358   2025-05-12   
224-621 5 Waukegan IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-10-04   
224-621 6 Waukegan IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2025-01-02   
224-621 8 Waukegan IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-03-04   
224-621 9 Waukegan IL   624H ONVOY SPECTRUM, LLC 358   2025-05-12   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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