the server is caddy.
the file server used for /files is simple-http-server by TheWaWar.
page source (and templates) are available at /files/page/
the tool for checking the status of minecraft servers used is mcsrvstat.us (credit to Anders G. Jørgensen)
running on Debian, the universal operating system.
i paid $0.00 and a loaf of bread for a friend to set up this domain. (it's free, see DuckDNS)