The only fully surrounded pocket of ISIS remains in the desert south of the Euphrates - completely surrounded by SAA and Russian forces, not the Kurds and Americans.
https://www.youtube.com/watch?v=ZJPeRDh1P7k
If you watch this video you can see that the conflict in Iraq was already done so that one area you see is actually just desert with ISIS hiding in holes so they don't really "control" it rather are just hiding but because the SAA doesn't "control" it either they give it to ISIS.
he only fully surrounded pocket of ISIS remains in the desert south of the Euphrates
https://syria.liveuamap.com/en/time/14.09.2018
This doesn't go back to the dates unless you pay but you can see the area that was still there for almost an entire year surrounded by the Kurds from Dec 7 on wards. Just like the desert pocket the SAA surrounded that northern part was just little resistance in the desert .