Yeah. The article explains whether the IANA rules come from, but this kind of thing happens so rarely that frankly it should be handled on a case by case basis, and in this case the .io domain should just be straight up reassigned to the people that it should always have been assigned to.
SteamVR and ALVR are the only ones that I’ve gotten to work, no dice on standalone DCS though which was the whole reason I bought the damn headset a couple years ago