mastodon/docs/Using-Mastodon/List-of-Mastodon-instances.md

List of Known Mastodon instances

There is also a list at instances.mastodon.xyz showing realtime information about instances.

Name	Theme/Notes, if applicable	Open Registrations	IPv6
mastodon.social	Flagship, quick updates	Yes	No
awoo.space	Intentionally moderated, only federates with mastodon.social	Yes	No
animalliberation.social	Animal Rights	Yes	No
socially.constructed.space	Single user	No	No
epiktistes.com	N/A	Yes	No
fern.surgeplay.com	Federates everywhere, Minecraft-focused	Yes	No
gay.crime.team	the place for doin' gay crime online (please don't actually do crime here)	No	No
icosahedron.website	Icosahedron-themed (well, visually), open registration.	Yes	No
memetastic.space	Memes	Yes	No
social.diskseven.com	Single user	No	Yes
social.gestaltzerfall.net	Single user	No	No
mastodon.xyz	N/A	Yes	Yes
social.targaryen.house	Federates everywhere, quick updates.	Yes	Yes
masto.themimitoof.fr	N/A	Yes	Yes
social.imirhil.fr	N/A	No	Yes
social.wxcafe.net	Open registrations, federates everywhere, no moderation yet	Yes	Yes
octodon.social	Open registrations, federates everywhere, cutest instance yet	Yes	Yes
mastodon.club	Open Registration, Open Federation, Mostly Canadians	Yes	No
hostux.social	N/A	Yes	Yes
social.alex73630.xyz	Francophones	Yes	Yes
oc.todon.fr	Modérée et principalement francophone, pas de tolérances pour misogynie/LGBTphobies/validisme/etc.	Yes	Yes
maly.io	N/A	Yes	No
social.lou.lt	N/A	Yes	No
mastodon.ninetailed.uk	N/A	Yes	No
soc.louiz.org	"Coucou"	Yes	No
7nw.eu	N/A	Yes	No
mastodon.gougere.fr	N/A	Yes	No
aleph.land	N/A	Yes	No
share.elouworld.org	N/A	No	No
social.lkw.tf	N/A	No	No
manowar.social	N/A	No	No
social.ballpointcarrot.net	N/A	No	No
social.nasqueron.org	Dreamers, open source developers, free culture	Yes	Yes
status.dissidence.ovh	N/A	Yes	Yes
mastodon.cc	Art	Yes	No

Let me know if you start running one so I can add it to the list! (Alternatively, add it yourself as a pull request).