Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGILGMDS7

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
872-249 3 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2019-11-11   
872-259 A Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
872-259 2 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-03-01   
872-259 3 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-03-01   
872-263 A Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
872-263 2 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-07-07   
872-263 8 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-10-04   
872-264 6 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-09-27   
872-268 0 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-11-06   
872-268 1 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-11-12   
872-268 2 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-11-12   
872-268 3 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-11-12   
872-268 4 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-11-12   
872-395 6 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-07-29   
872-757 0 Chicago Zone 07-Stewart IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2016-09-12   
872-766 4 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-12-14   
872-766 5 Chicago Zone 01-Calumet IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2020-12-14   

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

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