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
773-474 4 Chicago Zone 10-Beverly IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-09-07   
773-474 5 Chicago Zone 10-Beverly IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
773-474 6 Chicago Zone 10-Beverly IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-09-07   
773-474 7 Chicago Zone 10-Beverly IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-04-23   
773-474 8 Chicago Zone 10-Beverly IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-09-07   
773-474 9 Chicago Zone 10-Beverly IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-09-07   
773-475 A Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-475 0 Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-475 1 Chicago Zone 06-Lafayette IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2008-11-10   
773-475 2 Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-475 3 Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-475 4 Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-475 5 Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-475 6 Chicago Zone 06-Lafayette IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
773-475 7 Chicago Zone 06-Lafayette IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
773-475 8 Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-475 9 Chicago Zone 06-Lafayette IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-476 A Chicago Zone 08-Prospect IL CHCGILPRDS0  9329 ILLINOIS BELL TEL CO 358      
773-477 A Chicago Zone 04-Lakeview IL CHCGILLWDS0  9329 ILLINOIS BELL TEL CO 358      
773-478 A Chicago Zone 02-Irving IL CHCGILIRDS0  9329 ILLINOIS BELL TEL CO 358      
773-479 A Chicago Zone 05-Merrimac IL CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-480 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
773-481 A Chicago Zone 03-Kildare IL CHCGILKIDS0  9329 ILLINOIS BELL TEL CO 358      
773-482 A Chicago Zone 11-O'Hare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
773-482 0 Chicago Zone 11-O'Hare IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-09-15   
773-482 1 Chicago Zone 11-O'Hare IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-09-15   
773-482 2 Chicago Zone 11-O'Hare IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-09-28   
773-482 3 Chicago Zone 11-O'Hare IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-09-15   
773-482 4 Chicago Zone 11-O'Hare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2006-11-26   
773-482 5 Chicago Zone 11-O'Hare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
773-482 6 Chicago Zone 11-O'Hare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2004-12-27   
773-482 7 Chicago Zone 11-O'Hare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2004-12-24   
773-482 8 Chicago Zone 11-O'Hare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2004-12-27   
773-482 9 Chicago Zone 11-O'Hare IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2004-12-27   
773-483 A Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-483 0 Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-483 1 Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-483 2 Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-483 3 Chicago Zone 07-Stewart IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-10-18   
773-483 4 Chicago Zone 07-Stewart IL   490J BOOST SUBSCRIBERCO L.L.C. 358   2025-10-26   
773-483 5 Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-483 6 Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-483 7 Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-483 8 Chicago Zone 07-Stewart IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2025-05-16   
773-483 9 Chicago Zone 07-Stewart IL CHCGILSTDS0  9329 ILLINOIS BELL TEL CO 358      
773-484 A Chicago Zone 07-Stewart IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
773-484 0 Chicago Zone 07-Stewart IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2003-08-18   
773-484 1 Chicago Zone 07-Stewart IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2010-05-20   
773-484 2 Chicago Zone 07-Stewart IL   460K FIRST COMMUNICATIONS, LLC 358   2011-10-21   
773-484 3 Chicago Zone 07-Stewart IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2003-08-18   

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

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