Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-365 6 Northbrook IL 224C ONVOY, LLC 358   2010-09-05   
224-365 7 Northbrook IL 224C ONVOY, LLC 358   2010-09-05   
224-371 A Grayslake IL 224C ONVOY, LLC 358      
224-371 1 Grayslake IL 224C ONVOY, LLC 358   2021-04-01   
224-371 2 Grayslake IL 224C ONVOY, LLC 358   2021-04-01   
224-371 3 Grayslake IL 224C ONVOY, LLC 358   2021-04-01   
224-371 4 Grayslake IL 224C ONVOY, LLC 358   2021-04-01   
224-371 5 Grayslake IL 224C ONVOY, LLC 358   2024-08-14   
224-371 6 Grayslake IL 224C ONVOY, LLC 358   2023-07-22   
224-371 7 Grayslake IL 224C ONVOY, LLC 358   2021-03-06   
224-371 8 Grayslake IL 224C ONVOY, LLC 358   2021-03-06   
224-372 8 Lake Villa IL 224C ONVOY, LLC 358   2012-10-01   
224-376 6 Fox Lake IL 224C ONVOY, LLC 358   2021-09-02   
224-378 A Libertyville IL 224C ONVOY, LLC 358      
224-378 0 Libertyville IL 224C ONVOY, LLC 358   2023-11-12   
224-378 6 Libertyville IL 224C ONVOY, LLC 358   2021-11-18   
224-378 7 Libertyville IL 224C ONVOY, LLC 358   2021-11-18   
224-378 8 Libertyville IL 224C ONVOY, LLC 358   2021-11-18   
224-379 A Park Ridge IL 224C ONVOY, LLC 358      
224-379 0 Park Ridge IL 224C ONVOY, LLC 358   2023-11-12   
224-379 2 Park Ridge IL 224C ONVOY, LLC 358   2023-11-12   
224-379 3 Park Ridge IL 224C ONVOY, LLC 358   2023-11-12   
224-379 4 Park Ridge IL 224C ONVOY, LLC 358   2023-11-12   
224-379 5 Park Ridge IL 224C ONVOY, LLC 358   2023-11-12   
224-379 6 Park Ridge IL 224C ONVOY, LLC 358   2023-11-12   
224-379 7 Park Ridge IL 224C ONVOY, LLC 358   2023-11-12   
224-379 8 Park Ridge IL 224C ONVOY, LLC 358   2023-07-22   
224-379 9 Park Ridge IL 224C ONVOY, LLC 358   2024-07-29   
224-385 0 Barrington IL 224C ONVOY, LLC 358   2016-02-27   
224-385 1 Barrington IL 224C ONVOY, LLC 358   2016-02-27   
224-386 0 Palatine IL 224C ONVOY, LLC 358   2014-12-30   
224-386 1 Palatine IL 224C ONVOY, LLC 358   2014-12-30   
224-386 3 Palatine IL 224C ONVOY, LLC 358   2016-02-25   
224-390 0 Round Lake IL 224C ONVOY, LLC 358   2023-08-12   
224-393 A Huntley IL 224C ONVOY, LLC 358      
224-393 0 Huntley IL 224C ONVOY, LLC 358   2023-08-12   
224-393 1 Huntley IL 224C ONVOY, LLC 358   2021-09-10   
224-393 2 Huntley IL 224C ONVOY, LLC 358   2021-09-10   
224-393 3 Huntley IL 224C ONVOY, LLC 358   2021-08-08   
224-393 4 Huntley IL 224C ONVOY, LLC 358   2021-08-08   
224-393 5 Huntley IL 224C ONVOY, LLC 358   2021-08-08   
224-393 6 Huntley IL 224C ONVOY, LLC 358   2021-08-08   
224-393 7 Huntley IL 224C ONVOY, LLC 358   2021-09-10   
224-393 8 Huntley IL 224C ONVOY, LLC 358   2021-09-10   
224-393 9 Huntley IL 224C ONVOY, LLC 358   2023-08-12   
224-394 A Bartlett IL 224C ONVOY, LLC 358      
224-394 4 Bartlett IL 224C ONVOY, LLC 358   2021-09-13   
224-394 5 Bartlett IL 224C ONVOY, LLC 358   2021-09-13   
224-394 6 Bartlett IL 224C ONVOY, LLC 358   2021-09-13   
224-394 7 Bartlett IL 224C ONVOY, LLC 358   2021-09-13   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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