IP = 104.21.93.91
Content type of robots.txt is text/html; charset=UTF-8!
Look up this url in the url tool
https://fulstack.dev/.well-known/acme-challenge: 526 text/html; charset=UTF-8
https://fulstack.dev/.well-known/csvm: 526 text/html; charset=UTF-8
https://fulstack.dev/.well-known/nostr.json: 526 text/html; charset=UTF-8
https://fulstack.dev/.well-known/security.txt: 526 text/html; charset=UTF-8
https://fulstack.dev/.well-known/traffic-advice: 526 text/html; charset=UTF-8