serpent.skin has blocked the following instances:

artisan.chat for "mutual suspension - likely guilt by federation, heavily associated with mastodon.art"
asteroidm.space for "art theft"
bird.makeup for "art theft"
chudbuds.lol for "hate speech"
detroitriotcity.com for "hate speech, spam"
feral.cafe for "animal sexual abuse"
freaks.university for "child and animal sexual abuse"
freak.university for "child and animal sexual abuse"
gab.ai for "hate speech"
gab.com for "hate speech"
lolison.network for "child sexual abuse"
lolison.top for "child sexual abuse"
mastodon.art for "harassment, thinly veiled queerphobia, mutual suspension"
obo.sh for "child sexual abuse"
pawoo.net for "child sexual abuse (lack of moderation)"
pieville.net for "hate speech"
poa.st for "hate speech"
posting.lolicon.rocks for "calling the admin a slur is a great way to get suspended"
preteengirls.biz for "child sexual abuse"
(the list has been truncated to the first 20 entries)