Oof, a bunch of old accounts created from 2018 - 2022 have been hacked and are being used to post racist spam - I'm suspending and purging them as soon as they pop up but sincere apologies if you see any of it!
Edit: This is what's going on: https://mastodon.iftas.org/@iftas/117227487503682764
And some of these IPs matched the accounts I've just blocked, so I've imported them all as IP blocks: