IP = 151.101.194.114
No robots.txt
Look up this url in the url tool
https://developers.yubico.com/.well-known/acme-challenge: 300 text/html; charset=iso-8859-1
https://developers.yubico.com/.well-known/csvm: 300 text/html; charset=iso-8859-1
https://developers.yubico.com/.well-known/nostr.json: 300 text/html; charset=iso-8859-1
https://developers.yubico.com/.well-known/security.txt: 300 text/html; charset=iso-8859-1
https://developers.yubico.com/.well-known/traffic-advice: 300 text/html; charset=iso-8859-1