IP = 109.235.174.4
No robots.txt
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https://staff.math.su.se/.well-known/acme-challenge: 404 text/html; charset=iso-8859-1
https://staff.math.su.se/.well-known/csvm: 404 text/html; charset=iso-8859-1
https://staff.math.su.se/.well-known/nostr.json: 404 text/html; charset=iso-8859-1
https://staff.math.su.se/.well-known/security.txt: 404 text/html; charset=iso-8859-1
https://staff.math.su.se/.well-known/traffic-advice: 404 text/html; charset=iso-8859-1