IP = 195.135.21.249
Content type of robots.txt is text/html; charset=iso-8859-1!
Look up this url in the url tool
https://pnb.payot.ch/.well-known/acme-challenge: 400 text/html; charset=iso-8859-1
https://pnb.payot.ch/.well-known/csvm: 400 text/html; charset=iso-8859-1
https://pnb.payot.ch/.well-known/nostr.json: 400 text/html; charset=iso-8859-1
https://pnb.payot.ch/.well-known/security.txt: 400 text/html; charset=iso-8859-1
https://pnb.payot.ch/.well-known/traffic-advice: 400 text/html; charset=iso-8859-1