Local Calling Guide

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

NXX: 245

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-245 A Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
773-245 0 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-08-14   
773-245 1 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-10-24   
773-245 2 Chicago Zone 08-Portsmouth IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-27   
773-245 3 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   
773-245 4 Chicago Zone 08-Portsmouth IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2011-02-28   
773-245 5 Chicago Zone 08-Portsmouth IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-10-16   
773-245 6 Chicago Zone 08-Portsmouth IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   
773-245 7 Chicago Zone 08-Portsmouth IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-10-27   
773-245 8 Chicago Zone 08-Portsmouth IL   224C ONVOY, LLC 358   2025-09-27   
773-245 9 Chicago Zone 08-Portsmouth IL   224C ONVOY, LLC 358   2025-09-27   

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

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