This may seems like just a normal website, but it is much more. This server abuses various protocols that they will transmit data of my website.
Try one of the following commands:
curl dict://jmattheis.de/show:server
curl ftp://jmattheis.de
curl gopher://jmattheis.de
curl http://jmattheis.de
curl https://jmattheis.de
curl 'imap://jmattheis.de/INBOX;UID=1' -u ':'
curl pop3://jmattheis.de/1
curl tftp://jmattheis.de
dict -h jmattheis.de -I
dig @jmattheis.de +tcp +short
docker -H jmattheis.de inspect -f '{{.Value}}' start
docker run --rm jmattheis.de/start
finger jmattheis.de
gemget gemini://jmattheis.de/ -o-
netcat jmattheis.de 23
redis-cli -h jmattheis.de lrange start 0 0
ssh jmattheis.de
telnet jmattheis.de 23
whois -h jmattheis.de .
wscat -c jmattheis.de