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: 757

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-757 A Round Lake IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
224-757 0 Round Lake IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-01-06   
224-757 1 Round Lake IL   224C ONVOY, LLC 358   2019-07-07   
224-757 2 Round Lake IL   6529 T-MOBILE USA, INC. 358   2019-02-28   
224-757 3 Round Lake IL   224C ONVOY, LLC 358   2019-07-07   
224-757 4 Round Lake IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-01-06   
224-757 5 Round Lake IL   318J COMCAST IP PHONE, LLC 358   2005-04-21   
224-757 6 Round Lake IL   460K FIRST COMMUNICATIONS, LLC 358   2005-06-20   
224-757 7 Round Lake IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2005-08-25   
224-757 8 Round Lake IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2005-08-25   
224-757 9 Round Lake IL   224C ONVOY, LLC 358   2019-07-07   

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

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