Local Calling Guide

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
773-524 6 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-27   
773-527 A Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-527 0 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-527 1 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-527 2 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-527 4 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-527 5 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-527 6 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-527 7 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-530 1 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-04-22   
773-530 2 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-04-22   
773-530 3 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-04-22   
773-541 A Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-541 2 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-541 3 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-541 6 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-541 7 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-541 8 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-546 9 Chicago Zone 10-Pullman IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-05-12   
773-569 3 Chicago Zone 03-Newcastle IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-12-08   
773-570 A Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-570 3 Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-07-14   
773-570 4 Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-570 5 Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-07-14   
773-570 6 Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-07-14   
773-572 A Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 1 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 2 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 3 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 4 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 5 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 6 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 7 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 8 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-572 9 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-584 3 Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-09-17   
773-596 1 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-06-12   
773-596 9 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-06-12   
773-597 4 Chicago Zone 07-Stewart IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-03-20   
773-598 4 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-10-28   
773-598 5 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-03-13   
773-598 8 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-09-10   
773-609 6 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-05-17   
773-634 9 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-635 A Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2024-12-27   
773-635 2 Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-635 3 Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-639 1 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-01-29   
773-639 2 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-02-13   
773-649 1 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-07-08   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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