Local Calling Guide

Area code/prefix search

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-724 5 Skokie IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-05-20   
224-724 6 Skokie IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-05-20   
224-781 9 Schiller Park IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2021-05-14   
224-799 6 Northbrook IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2021-12-22   
224-818 2 Round Lake IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-11-19   
312-216 3 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-04-28   
312-238 1 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-238 2 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-238 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-238 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-319 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-06-20   
312-373 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-392 3 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-12-21   
312-392 9 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-12-21   
312-395 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-395 9 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-423 0 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2022-06-16   
312-429 8 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-477 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2011-02-14   
312-479 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-479 9 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-521 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-521 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-529 1 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-529 3 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-529 6 Chicago Zone 01-Franklin IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-548 4 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2007-10-20   
312-548 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2007-10-20   
312-569 1 Chicago Zone 01-Monroe IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2002-06-24   
312-579 1 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-11-06   
312-605 7 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-04   
312-728 1 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-04-02   
312-728 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-04-19   
312-728 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-04-19   
312-736 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-736 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-12-22   
312-736 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-12-22   
312-741 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-06-20   
312-741 7 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-09-24   
312-761 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-11-29   
312-761 7 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-12-14   
312-768 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-768 5 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-776 0 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-05-27   
312-776 1 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-05-27   
312-779 8 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2019-07-13   
312-872 6 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-11-19   
312-892 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 0 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-892 1 Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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