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: 646

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-646 A Northbrook IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-07-04   
224-646 4 Northbrook IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-07-04   
224-646 5 Northbrook IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-07-04   
224-646 6 Northbrook IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-07-04   
224-646 7 Northbrook IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-07-04   
224-646 8 Northbrook IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-07-04   
224-646 9 Northbrook IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-07-04   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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