Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 224 [Rate centres in NPA 224] [Dial plan for NPA 224]

NXX: 308

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-308 A Round Lake IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
224-308 0 Round Lake IL   6529 T-MOBILE USA, INC. 358   2012-06-30   
224-308 1 Round Lake IL   224C ONVOY, LLC 358   2012-09-30   
224-308 2 Round Lake IL   6529 T-MOBILE USA, INC. 358   2013-03-20   
224-308 3 Round Lake IL   6529 T-MOBILE USA, INC. 358   2013-03-20   
224-308 4 Round Lake IL   6529 T-MOBILE USA, INC. 358   2013-09-27   
224-308 5 Round Lake IL   515J IP HORIZON LLC 358   2013-05-05   
224-308 6 Round Lake IL   6529 T-MOBILE USA, INC. 358   2013-07-31   
224-308 7 Round Lake IL   6529 T-MOBILE USA, INC. 358   2013-07-31   
224-308 8 Round Lake IL   6529 T-MOBILE USA, INC. 358   2013-03-05   
224-308 9 Round Lake IL   6529 T-MOBILE USA, INC. 358   2012-06-30   

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

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