It sounds like TDS has a pretty significant fiber cut in Shaumburg, IL which is causing a multi-state issue.
Update 10:45am CDT: Spectrum confirms the cut is causing issues for their customers as well.
Update 11:55am CDT: TDS has two major cuts - one in IL, one in MN - that are affecting TDS access in WI. Happy Friday.
Update 2:15pm CDT: Services are being restored, connectivity is coming back up. Happy Friday...
