Local Calling Guide

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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 326

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-326 A Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-05-19   
331-326 0 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-05-19   
331-326 1 Downers Grove IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-05-21   
331-326 2 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-07-29   
331-326 3 Downers Grove IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-08-10   
331-326 4 Downers Grove IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2024-08-10   
331-326 5 Downers Grove IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2024-08-10   
331-326 6 Downers Grove IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-11-03   
331-326 7 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-11-22   
331-326 8 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-06-22   
331-326 9 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-06-22   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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