f.haeder.net has blocked the following instances:

waterford.international for "Joined the "no reason given" blocking party/crowd against me"
misskey.lilith.im for "Joined the "no reason given" blocking party/crowd against me"
*.mastodon.iftas.org for "Joined the "no reason given" blocking party/crowd against me"
social.heise.de for "Links from them contain #click-tracking (search for that hashtag, with a dash in it), not interested here."