Local Calling Guide

Area code/prefix search

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
331-400 2 Oswego IL 224C ONVOY, LLC 358   2021-08-12   
331-400 5 Oswego IL 224C ONVOY, LLC 358   2024-04-05   
331-400 6 Oswego IL 224C ONVOY, LLC 358   2021-08-12   
331-400 7 Oswego IL 224C ONVOY, LLC 358   2021-08-12   
331-401 6 Naperville IL 224C ONVOY, LLC 358   2017-02-13   
331-422 4 Geneva IL 224C ONVOY, LLC 358   2014-04-17   
331-426 1 Lemont IL 224C ONVOY, LLC 358   2023-08-12   
331-426 4 Lemont IL 224C ONVOY, LLC 358   2023-08-12   
331-426 5 Lemont IL 224C ONVOY, LLC 358   2023-08-12   
331-426 6 Lemont IL 224C ONVOY, LLC 358   2023-08-12   
331-426 7 Lemont IL 224C ONVOY, LLC 358   2023-08-12   
331-444 7 Naperville IL 224C ONVOY, LLC 358   2012-09-30   
331-454 7 Aurora IL 224C ONVOY, LLC 358   2009-11-10   
331-466 1 Glen Ellyn IL 224C ONVOY, LLC 358   2023-10-16   
331-466 2 Glen Ellyn IL 224C ONVOY, LLC 358   2023-10-16   
331-466 4 Glen Ellyn IL 224C ONVOY, LLC 358   2023-10-16   
331-466 5 Glen Ellyn IL 224C ONVOY, LLC 358   2023-10-16   
331-466 6 Glen Ellyn IL 224C ONVOY, LLC 358   2023-10-16   
331-466 7 Glen Ellyn IL 224C ONVOY, LLC 358   2023-07-03   
331-466 8 Glen Ellyn IL 224C ONVOY, LLC 358   2023-10-16   
331-466 9 Glen Ellyn IL 224C ONVOY, LLC 358   2023-10-16   
331-472 1 Naperville IL 224C ONVOY, LLC 358   2008-12-19   
331-481 5 Downers Grove IL 224C ONVOY, LLC 358   2010-03-04   
331-500 2 Geneva IL 224C ONVOY, LLC 358   2021-11-19   
331-500 3 Geneva IL 224C ONVOY, LLC 358   2021-11-19   
331-500 4 Geneva IL 224C ONVOY, LLC 358   2021-11-19   
331-500 9 Geneva IL 224C ONVOY, LLC 358   2023-09-07   
331-529 5 Naperville IL 224C ONVOY, LLC 358   2020-12-03   
331-529 6 Naperville IL 224C ONVOY, LLC 358   2020-12-03   
331-529 7 Naperville IL 224C ONVOY, LLC 358   2020-12-03   
331-529 8 Naperville IL 224C ONVOY, LLC 358   2020-12-03   
331-551 7 Lombard IL 224C ONVOY, LLC 358   2010-07-16   
331-625 6 Downers Grove IL 224C ONVOY, LLC 358   2010-09-03   
331-625 7 Downers Grove IL 224C ONVOY, LLC 358   2010-09-03   
331-625 8 Downers Grove IL 224C ONVOY, LLC 358   2010-09-03   
331-666 A Aurora IL 224C ONVOY, LLC 358      
331-666 5 Aurora IL 224C ONVOY, LLC 358   2019-06-07   
331-666 6 Aurora IL 224C ONVOY, LLC 358   2017-11-26   
331-666 7 Aurora IL 224C ONVOY, LLC 358   2019-06-07   
331-701 2 Naperville IL 224C ONVOY, LLC 358   2015-05-04   
331-702 9 Naperville IL 224C ONVOY, LLC 358   2014-12-10   
331-703 3 West Chicago IL 224C ONVOY, LLC 358   2014-04-17   
331-704 1 Kaneville IL 224C ONVOY, LLC 358   2016-03-11   
331-704 2 Kaneville IL 224C ONVOY, LLC 358   2016-05-01   
331-704 3 Kaneville IL 224C ONVOY, LLC 358   2016-05-01   
331-704 4 Kaneville IL 224C ONVOY, LLC 358   2018-09-16   
331-716 A Wheaton IL 224C ONVOY, LLC 358      
331-716 1 Wheaton IL 224C ONVOY, LLC 358   2016-03-03   
331-716 2 Wheaton IL 224C ONVOY, LLC 358   2016-03-03   
331-716 3 Wheaton IL 224C ONVOY, LLC 358   2016-03-03   

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

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