Local Calling Guide

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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-642 3 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-07-30   
773-642 4 Chicago Zone 03-Kildare IL ELGNILOTGT5  5562 METROPCS, INC. 358   2007-07-30   
773-642 5 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-04-29   
773-642 6 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-04-29   
773-642 7 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-04-29   
773-642 8 Chicago Zone 03-Kildare IL ELGNILOTGT5  5562 METROPCS, INC. 358   2007-04-29   
773-642 9 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-04-29   
773-643 A Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 0 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 1 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 2 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 3 Chicago Zone 07-Hyde Park IL CHCGILWUKMD  939H COMMIO, LLC 358   2021-08-29   
773-643 4 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 5 Chicago Zone 07-Hyde Park IL CHCGILWUKMD  939H COMMIO, LLC 358   2021-08-29   
773-643 6 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 7 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 8 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-643 9 Chicago Zone 07-Hyde Park IL CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-644 A Chicago Zone 02-Edgewater IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-644 0 Chicago Zone 02-Edgewater IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-07-26   
773-644 1 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-644 2 Chicago Zone 02-Edgewater IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2011-02-26   
773-644 3 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-644 4 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-644 5 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-644 6 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-644 7 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-644 8 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-644 9 Chicago Zone 02-Edgewater IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-17   
773-645 A Chicago Zone 04-Humboldt IL CHCGILHBDS1  9329 ILLINOIS BELL TEL CO 358      
773-645 0 Chicago Zone 04-Humboldt IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-03-30   
773-645 1 Chicago Zone 04-Humboldt IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-03-30   
773-645 2 Chicago Zone 04-Humboldt IL CHCGILHBDS1  9329 ILLINOIS BELL TEL CO 358      
773-645 3 Chicago Zone 04-Humboldt IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2020-09-19   
773-645 4 Chicago Zone 04-Humboldt IL CHCGIL24DS6  224C ONVOY, LLC 358   2007-05-16   
773-645 5 Chicago Zone 04-Humboldt IL CHCGILHBDS1  9329 ILLINOIS BELL TEL CO 358      
773-645 6 Chicago Zone 04-Humboldt IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2005-12-16   
773-645 7 Chicago Zone 04-Humboldt IL CHCGILHBDS1  9329 ILLINOIS BELL TEL CO 358      
773-645 8 Chicago Zone 04-Humboldt IL CHCGILHBDS1  9329 ILLINOIS BELL TEL CO 358      
773-645 9 Chicago Zone 04-Humboldt IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-03-30   
773-646 A Chicago Zone 09-Mitchell IL CHCGILMHRS0  9329 ILLINOIS BELL TEL CO 358      
773-647 A Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-647 0 Chicago Zone 03-Kildare IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-02-17   
773-647 1 Chicago Zone 03-Kildare IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2008-11-24   
773-647 2 Chicago Zone 03-Kildare IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-12-31   
773-647 3 Chicago Zone 03-Kildare IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-12-31   
773-647 4 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-01   
773-647 5 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-01   
773-647 6 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-01   
773-647 7 Chicago Zone 03-Kildare IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-12-01   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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