@mathlover No, you won't find it.
Opal has this info about it :
>> cybre.space instance blocklist restricted to logged-in users
on this page, recommended reading : https://wowana.me/fediverse.xht
@design_RG Thanks! Seems to be one of those toxic places you mentioned earlier.
@mathlover mastodon.social is itself blocke by some people, believe it or not -- who say the instance is not moderated adequately.
There's pettiness, animosity, small mindedness and strutting for power involved in all this.
Some people are admins of very small instances, but frequently out and posting their FediBlock recommendations -- which others with less familiarity with the fediverse follow as true gospel.
Gab had disappeared from federated space about 10 days ago -- having switched off ActivityPub protocol all together and on course to build their own, alternative federation protocol, from scratch.
We had some people asking if that meant the end of some of the blocking this instance suffers from -- as I mentioned some are significant, and I have experienced personal harm due to blocked content or denied services due to this being the source.
Not sure what Gab's path is now, regarding protocols, it would be ideal if they stayed out all together.
That by itself will NOT clear a lot of problems this instance has -- as some are rooted on the contents of the Terms of Service here, or personal problems with the administrator.
I would advise keeping all these things in mind -- and plot your own course, find the best places to suit you or your various interests, projects, etc.
Myself, I have been tacking away.