If you want to find out more about an instance on the Fediverse, the easiest way to do it is through https://fediverse.network - just put the instance domain name after "fediverse.network/".
It works for all kinds of Fediverse sites including Mastodon, Friendica, PixelFed, PeerTube, Write Freely etc.
Some examples:
https://fediverse.network/mastodon.host
https://fediverse.network/nerdica.net
https://fediverse.network/pixelfed.de
https://fediverse.network/peertube.social