[MC-159134] Can't connect to specific multiplayer server

I can't connect to server Slogoman.mcs.cx

first I couldn't connect to it and sometimes I could but the connection kept failing and now I want to connect but it says:

Can't resolve hostname (don't know what this means)

then I try and get this: Failed to connect to server Unknown host

what does this mean?

Comments 2

Either you gave in the wrong domain or the server no longer exists.

thanks, that would explain a lot seeing the server was owned by a youtuber by the name of Slogoman.