Local Calling Guide

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NPA: 773 [Rate centres in NPA 773] [Dial plan for NPA 773]

NXX: 340

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-340 A Chicago Zone 08-Portsmouth IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-12-29   
773-340 0 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-02-25   
773-340 1 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-02-25   
773-340 2 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-12   
773-340 3 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-12   
773-340 4 Chicago Zone 08-Portsmouth IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-07-18   
773-340 5 Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2008-06-15   
773-340 6 Chicago Zone 08-Portsmouth IL   224C ONVOY, LLC 358   2025-10-26   
773-340 8 Chicago Zone 08-Portsmouth IL CHCGIL24DS6  224C ONVOY, LLC 358   2008-08-31   
773-340 9 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-12   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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