I made a silly thing: can you guess if an instance is running Mastodon or Pleroma based on the domain name alone?

https://guess-the-instance.neocities.org/

When occasionally browsing the whole known network, I often had the impression that it's easy to tell if someone is on Mastodon or Pleroma even before clicking the link to their instance.

Turns out that, aside from the obvious cases ("pl" or "masto" subdomains), it's actually not that easy. Give it a try!
Screenshot from 2019-03-08 18-5…