I just noticed that a server (http://et.trackbase.net/server/46271/) with almost same IP-address (probably same serverhost) is also displayed as "down". Other sites displays that its up and running - just like bunker4fun.

So, could you post the IP of the scanning "engine" in case that trackbase is being blocked by the serverhost?
Then i'll ask them to put the trackbase IP on a whitelist - if possible