It's made by a former piratebay founder. When you buy a domain from them, they act as a middleman and keep legal ownership of the domain thus shielding your PI somewhat from legal enforcement. They claim their hosting is "In secret locations in Sweden". Their LLC is located in Nevis (some tax evasion island).

There's also https://1984.hosting/ which runs a similar operation out of iceland.

I used to use one of these Swedish hosts for a very large TV torrent tracker. They successfully batted off every attempt to shut it down.

The most successful attacks were against our donation payment providers, knocking our (considerable) income offline for a few days at a time.