You can use the custom filters to see a list of all your opt outs for SMS and for Voice.
At the top on the far right, you'll see the Filter option (red oval in image below). Click that.
Scroll all the way to the By Text Opt-out Status options and select Unsubscribed first.
Select Is True and then Done.
Now, click Add Filter, and repeat Steps 5 & 6for Opted Out.
Change the and to or so both opt outs are included in the report.
Select all the results by selecting the check box shown above.
Then select Export Selection.
Repeat this all for the two By Voice Opt-out Status options if you would like a list of those as well.