Local Calling Guide

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

NXX: 432

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-432 A Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
773-432 0 Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2005-10-24   
773-432 1 Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-08-06   
773-432 2 Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
773-432 3 Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
773-432 4 Chicago Zone 08-Portsmouth IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-03-03   
773-432 5 Chicago Zone 08-Portsmouth IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-07-09   
773-432 6 Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
773-432 7 Chicago Zone 08-Portsmouth IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-06-21   
773-432 8 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-07-02   
773-432 9 Chicago Zone 08-Portsmouth IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      

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

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