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: 818

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-818 A Round Lake IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
224-818 0 Round Lake IL   224C ONVOY, LLC 358   2014-12-30   
224-818 1 Round Lake IL   224C ONVOY, LLC 358   2014-12-30   
224-818 2 Round Lake IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-11-19   
224-818 3 Round Lake IL   6529 T-MOBILE USA, INC. 358   2015-10-29   
224-818 4 Round Lake IL   6529 T-MOBILE USA, INC. 358   2015-10-29   
224-818 5 Round Lake IL   6529 T-MOBILE USA, INC. 358   2015-10-29   
224-818 6 Round Lake IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-04-04   
224-818 7 Round Lake IL   6529 T-MOBILE USA, INC. 358   2015-03-21   
224-818 8 Round Lake IL   6529 T-MOBILE USA, INC. 358   2015-03-21   
224-818 9 Round Lake IL   6529 T-MOBILE USA, INC. 358   2014-09-14   

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

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