Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGILCGDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-531 6 Des Plaines IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2009-09-28   
224-938 4 Des Plaines IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2009-09-28   
312-242 A Chicago Zone 01-Wabash IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-242 0 Chicago Zone 01-Wabash IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-291 5 Chicago Zone 01-Wabash IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2006-01-20   
312-383 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-383 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-03-02   
312-383 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-03-02   
312-503 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 0 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 1 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 2 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 3 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 7 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 8 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-503 9 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-586 3 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-07-01   
312-586 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-07-01   
312-702 8 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-04-04   
312-734 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-734 2 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 3 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 7 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-734 8 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-11-01   
312-764 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-764 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-12-05   
312-764 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-12-05   
312-764 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-12-05   
312-846 3 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 4 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 5 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 7 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 8 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-846 9 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-06-12   
312-871 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-10-13   
312-871 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-10-13   
312-871 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-10-13   
312-881 1 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-08-16   
312-889 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-889 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-08-24   
312-889 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-08-24   
312-964 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-09-09   
312-964 7 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2015-09-11   
312-995 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-995 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
312-995 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
312-995 7 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
312-995 8 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
630-422 6 Bensenville IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-08-27   
630-644 5 Bensenville IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2013-12-16   
773-824 A Chicago Zone 03-Kildare IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-824 2 Chicago Zone 03-Kildare IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-824 3 Chicago Zone 03-Kildare IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-824 4 Chicago Zone 03-Kildare IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
847-789 5 Des Plaines IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2003-10-22   

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

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