Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGILWUKMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
331-345 8 Naperville IL 939H COMMIO, LLC 358   2021-10-14   
331-758 8 Aurora IL 939H COMMIO, LLC 358   2024-02-14   
331-850 1 Big Rock IL 939H COMMIO, LLC 358   2022-02-24   
464-222 4 Mokena IL 939H COMMIO, LLC 358   2023-08-20   
464-222 5 Mokena IL 939H COMMIO, LLC 358   2023-08-20   
464-222 6 Mokena IL 939H COMMIO, LLC 358   2023-08-20   
464-222 7 Mokena IL 939H COMMIO, LLC 358   2023-08-20   
464-222 8 Mokena IL 939H COMMIO, LLC 358   2023-08-20   
464-444 2 Beecher IL 939H COMMIO, LLC 358   2023-08-20   
464-444 3 Beecher IL 939H COMMIO, LLC 358   2023-08-20   
464-444 6 Beecher IL 939H COMMIO, LLC 358   2023-08-20   
464-444 7 Beecher IL 939H COMMIO, LLC 358   2023-08-20   
464-444 9 Beecher IL 939H COMMIO, LLC 358   2023-08-20   
630-568 1 Hinsdale IL 939H COMMIO, LLC 358   2021-10-14   
630-568 7 Hinsdale IL 939H COMMIO, LLC 358   2021-10-14   
708-392 0 Riverdale IL 939H COMMIO, LLC 358   2022-11-07   
708-433 2 Beecher IL 939H COMMIO, LLC 358   2024-03-04   
708-706 A Mokena IL 939H COMMIO, LLC 358   2024-03-09   
708-706 0 Mokena IL 939H COMMIO, LLC 358   2024-03-09   
708-706 1 Mokena IL 939H COMMIO, LLC 358   2024-03-09   
708-706 2 Mokena IL 939H COMMIO, LLC 358   2024-03-09   
708-946 5 Beecher IL 939H COMMIO, LLC 358   2024-02-03   
773-241 8 Chicago Zone 07-Hyde Park IL 939H COMMIO, LLC 358   2021-08-29   
773-373 1 Chicago Zone 07-Oakland IL 939H COMMIO, LLC 358   2021-08-29   
773-451 7 Chicago Zone 07-Oakland IL 939H COMMIO, LLC 358   2021-08-29   
773-635 5 Chicago Zone 06-Kedzie IL 939H COMMIO, LLC 358   2021-08-29   
773-635 9 Chicago Zone 06-Kedzie IL 939H COMMIO, LLC 358   2021-08-29   
773-643 3 Chicago Zone 07-Hyde Park IL 939H COMMIO, LLC 358   2021-08-29   
773-643 5 Chicago Zone 07-Hyde Park IL 939H COMMIO, LLC 358   2021-08-29   
773-940 7 Chicago Zone 06-Kedzie IL 939H COMMIO, LLC 358   2021-08-29   
773-940 8 Chicago Zone 06-Kedzie IL 939H COMMIO, LLC 358   2021-08-29   
773-940 9 Chicago Zone 06-Kedzie IL 939H COMMIO, LLC 358   2021-08-29   
779-219 A Braidwood IL 939H COMMIO, LLC 358      
779-219 0 Braidwood IL 939H COMMIO, LLC 358   2023-10-15   
779-219 1 Braidwood IL 939H COMMIO, LLC 358   2023-10-15   
779-219 2 Braidwood IL 939H COMMIO, LLC 358   2023-10-15   
779-219 3 Braidwood IL 939H COMMIO, LLC 358   2023-10-15   
779-219 4 Braidwood IL 939H COMMIO, LLC 358   2023-10-15   
779-267 2 Joliet IL 939H COMMIO, LLC 358   2021-09-03   
779-267 3 Joliet IL 939H COMMIO, LLC 358   2021-09-03   
779-267 4 Joliet IL 939H COMMIO, LLC 358   2021-09-03   
779-326 0 Dwight IL 939H COMMIO, LLC 358   2023-08-25   
779-326 6 Dwight IL 939H COMMIO, LLC 358   2023-08-25   
779-326 7 Dwight IL 939H COMMIO, LLC 358   2023-08-25   
779-326 8 Dwight IL 939H COMMIO, LLC 358   2023-08-25   
779-326 9 Dwight IL 939H COMMIO, LLC 358   2023-08-25   
779-331 2 Kankakee IL 939H COMMIO, LLC 358   2024-02-04   
779-331 3 Kankakee IL 939H COMMIO, LLC 358   2024-02-04   
779-338 1 Crescent City IL 939H COMMIO, LLC 358   2022-02-24   
779-340 1 Coal City IL 939H COMMIO, LLC 358   2022-11-07   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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