It is worth noting (assuming we are referring to the same incident) the Mastodon data wasn’t the target of the search, the person just happened to be actively working with a database backup when the FBI executed the warrant and took all of the person’s computers and stuff.

I have used many in the past, but currently use Cloudflare (out of laziness since I use them for DNS and such too) and Hover. Hover in particular is neat as it is the b2c registrar of Tucows, the company that has been the biggest b2b backend registrar for small registrars since the 90’s.