Local Calling Guide

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Chicago Zone 08-Portsmouth, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-780 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   
773-780 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-07-14   
773-780 2 CHCGIL24DS6  224C ONVOY, LLC 358   2011-08-01   
773-780 3 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   
773-780 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-07-14   
773-780 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-08-11   
773-780 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-08-11   
773-780 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-09-12   
773-780 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-09-12   
773-780 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-09-12   
773-789 A CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
773-789 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-04-04   
773-789 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-04-04   
773-789 2 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-09-03   
773-789 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-04-04   
773-789 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-04-04   
773-789 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2009-04-24   
773-789 6 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2008-12-01   
773-789 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-18   
773-789 8 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-18   
773-789 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-18   
773-838 A CHCGILPMDS0  9329 ILLINOIS BELL TEL CO 358      
773-875 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-884 A CHCGILPMDS0  9329 ILLINOIS BELL TEL CO 358      
773-912 A   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-912 0 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2020-04-11   
773-912 1   224C ONVOY, LLC 358   2026-02-20   
773-912 2 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-05-31   
773-912 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-03-19   
773-912 4 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2004-10-01   
773-912 5   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-912 6 CHCGILCLXOX  516C AT&T CORP. 358   2006-07-07   
773-912 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-03-19   
773-912 8   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-912 9   224C ONVOY, LLC 358   2026-02-20   
773-937 A CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
773-937 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-01   
773-937 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-01   
773-937 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-01   
773-937 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-01   
773-937 4 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-25   
773-937 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-10   
773-937 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-10   
773-937 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-10   
773-937 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-10   
773-937 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-10-10   
773-939 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-939 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-04-07   
773-939 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-04-07   
773-939 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-04-07   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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