Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 866

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-866 A Wheaton IL CHCGILWUTMD  516J TON80 COMMUNICATIONS, LLC 358      
331-866 0 Wheaton IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2022-11-17   
331-866 1 Wheaton IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2022-11-17   
331-866 2 Wheaton IL   516J TON80 COMMUNICATIONS, LLC 358   2022-03-15   
331-866 3 Wheaton IL   224C ONVOY, LLC 358   2022-12-12   
331-866 4 Wheaton IL   224C ONVOY, LLC 358   2022-12-12   
331-866 5 Wheaton IL   224C ONVOY, LLC 358   2022-12-12   
331-866 6 Wheaton IL   6529 T-MOBILE USA, INC. 358   2023-02-11   
331-866 7 Wheaton IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2022-11-17   
331-866 8 Wheaton IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2022-11-17   
331-866 9 Wheaton IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2022-11-17   

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

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