Well, sorry that there's not enough proof to go on here, but I'm tired of this guy. I've been DoSed by him multiple times now so I'm just going to go ahead and report him here to give you all a heads up.
The first time he DoSed me was on the third of this month (2/3/2016). I was on Tezuni's server and on the teamspeak that I'm Super Admin on, and Frosty was an admin. I noticed Blockland was lagging so I was trying to talk to the people on the Teamspeak server to see if they were having the same issue. I then get disconnected from the Teamspeak while Blockland is still lagging, then I get poked by Frosty on Teamspeak, he said something along the lines of "sorry, i was testing out some software to see if it worked". I then go to private chat on Teamspeak to see what he meant by that, and he said "I was testing a new DoS software".
Again, I apologize about not having more proof this happening, but I did take a few screenshots of what he had told me.
http://imgur.com/a/2a72lhttp://imgur.com/BZaWQbbhttp://imgur.com/a/ZJbpa