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: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-578 A Palatine IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
224-578 0 Palatine IL   6529 T-MOBILE USA, INC. 358      
224-578 1 Palatine IL   6529 T-MOBILE USA, INC. 358      
224-578 2 Palatine IL   6529 T-MOBILE USA, INC. 358      
224-578 3 Palatine IL   6529 T-MOBILE USA, INC. 358      
224-578 4 Palatine IL   6529 T-MOBILE USA, INC. 358      
224-578 5 Palatine IL   6529 T-MOBILE USA, INC. 358      
224-578 6 Palatine IL   6529 T-MOBILE USA, INC. 358   2007-03-05   
224-578 7 Palatine IL   8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
224-578 8 Palatine IL   6529 T-MOBILE USA, INC. 358   2007-11-09   
224-578 9 Palatine IL   6529 T-MOBILE USA, INC. 358      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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