{ "ok": true, "domain": "uni-hohenheim.de", "generated_at": "2026-08-10T13:03:22-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 74, "label": "Fair", "categories": { "dns": 75, "mail": 55, "security": 77, "network": 50, "availability": 100 }, "category_weights": { "dns": 25, "mail": 20, "security": 25, "network": 10, "availability": 20 }, "items": [ { "category": "dns", "title": "IPv4 (A)", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "1 IPv4 address(es) detected." }, { "category": "dns", "title": "IPv6 (AAAA)", "max_points": 10, "earned_points": 0, "lost_points": 10, "detail": "0 IPv6 address(es) detected." }, { "category": "dns", "title": "Name server redundancy", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "4 NS record(s); 2 or more required." }, { "category": "dns", "title": "SOA record", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "Authoritative zone record." }, { "category": "dns", "title": "DNSSEC chain", "max_points": 15, "earned_points": 0, "lost_points": 15, "detail": "Both DS and DNSKEY are required." }, { "category": "dns", "title": "CAA policy", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "Certificate authority restriction." }, { "category": "dns", "title": "DNS propagation", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "Agreement between public resolvers." }, { "category": "mail", "title": "MX records", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "3 MX record(s)." }, { "category": "mail", "title": "SPF", "max_points": 25, "earned_points": 25, "lost_points": 0, "detail": "SPF policy published." }, { "category": "mail", "title": "DMARC", "max_points": 25, "earned_points": 0, "lost_points": 25, "detail": "DMARC policy not found." }, { "category": "mail", "title": "DKIM", "max_points": 20, "earned_points": 0, "lost_points": 20, "detail": "No tested DKIM selector responded." }, { "category": "mail", "title": "MTA-STS", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "Mail transport policy." }, { "category": "mail", "title": "TLS-RPT", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "TLS reporting policy." }, { "category": "security", "title": "Valid TLS certificate", "max_points": 55, "earned_points": 55, "lost_points": 0, "detail": "198 day(s) remaining." }, { "category": "security", "title": "Certificate lifetime", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "Full points require at least 30 days remaining." }, { "category": "security", "title": "HTTP security headers", "max_points": 35, "earned_points": 12, "lost_points": 23, "detail": "3 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "PTR: typo3.rz.uni-hohenheim.de" }, { "category": "network", "title": "IPv4 diversity", "max_points": 35, "earned_points": 20, "lost_points": 15, "detail": "Two or more IPv4 addresses receive full points." }, { "category": "network", "title": "IPv6 connectivity", "max_points": 35, "earned_points": 0, "lost_points": 35, "detail": "AAAA availability." }, { "category": "availability", "title": "DNS resolution", "max_points": 40, "earned_points": 40, "lost_points": 0, "detail": "At least one address family must resolve." }, { "category": "availability", "title": "HTTP response", "max_points": 40, "earned_points": 40, "lost_points": 0, "detail": "HTTP/1.1 200 OK" }, { "category": "availability", "title": "HTTPS final URL", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "Final URL uses HTTPS." } ], "methodology": "Each category is normalized to 100. The total is the weighted sum: DNS 25%, Email 20%, Security 25%, Network 10%, Availability 20%.", "diagnostics": [ { "level": "ok", "title": "IPv4 (A)", "detail": "1 IPv4 address(es) detected.", "category": "dns", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "error", "title": "IPv6 (AAAA)", "detail": "0 IPv6 address(es) detected.", "category": "dns", "max_points": 10, "earned_points": 0, "lost_points": 10 }, { "level": "ok", "title": "Name server redundancy", "detail": "4 NS record(s); 2 or more required.", "category": "dns", "max_points": 20, "earned_points": 20, "lost_points": 0 }, { "level": "ok", "title": "SOA record", "detail": "Authoritative zone record.", "category": "dns", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "level": "error", "title": "DNSSEC chain", "detail": "Both DS and DNSKEY are required.", "category": "dns", "max_points": 15, "earned_points": 0, "lost_points": 15 }, { "level": "ok", "title": "CAA policy", "detail": "Certificate authority restriction.", "category": "dns", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "DNS propagation", "detail": "Agreement between public resolvers.", "category": "dns", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "level": "ok", "title": "MX records", "detail": "3 MX record(s).", "category": "mail", "max_points": 20, "earned_points": 20, "lost_points": 0 }, { "level": "ok", "title": "SPF", "detail": "SPF policy published.", "category": "mail", "max_points": 25, "earned_points": 25, "lost_points": 0 }, { "level": "error", "title": "DMARC", "detail": "DMARC policy not found.", "category": "mail", "max_points": 25, "earned_points": 0, "lost_points": 25 }, { "level": "error", "title": "DKIM", "detail": "No tested DKIM selector responded.", "category": "mail", "max_points": 20, "earned_points": 0, "lost_points": 20 }, { "level": "ok", "title": "MTA-STS", "detail": "Mail transport policy.", "category": "mail", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "TLS-RPT", "detail": "TLS reporting policy.", "category": "mail", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "Valid TLS certificate", "detail": "198 day(s) remaining.", "category": "security", "max_points": 55, "earned_points": 55, "lost_points": 0 }, { "level": "ok", "title": "Certificate lifetime", "detail": "Full points require at least 30 days remaining.", "category": "security", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "level": "warning", "title": "HTTP security headers", "detail": "3 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 12, "lost_points": 23 }, { "level": "ok", "title": "PTR reverse DNS", "detail": "PTR: typo3.rz.uni-hohenheim.de", "category": "network", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "warning", "title": "IPv4 diversity", "detail": "Two or more IPv4 addresses receive full points.", "category": "network", "max_points": 35, "earned_points": 20, "lost_points": 15 }, { "level": "error", "title": "IPv6 connectivity", "detail": "AAAA availability.", "category": "network", "max_points": 35, "earned_points": 0, "lost_points": 35 }, { "level": "ok", "title": "DNS resolution", "detail": "At least one address family must resolve.", "category": "availability", "max_points": 40, "earned_points": 40, "lost_points": 0 }, { "level": "ok", "title": "HTTP response", "detail": "HTTP/1.1 200 OK", "category": "availability", "max_points": 40, "earned_points": 40, "lost_points": 0 }, { "level": "ok", "title": "HTTPS final URL", "detail": "Final URL uses HTTPS.", "category": "availability", "max_points": 20, "earned_points": 20, "lost_points": 0 } ] }, "dns": { "records": { "A": [ "144.41.103.105" ], "AAAA": [], "CNAME": [], "MX": [ "10 smtp1.rz.uni-hohenheim.de.", "10 smtp2.rz.uni-hohenheim.de.", "30 smtp4.rz.uni-hohenheim.de." ], "TXT": [ "\"apple-domain-verification=pAqIy5TDUQfsLdHJ\"", "\"HARICA-DacYFK8l9JmJpPW9ANr\"", "\"google-site-verification=RLXawPddgD3oNsNhGoCQRYhLILkZfqMrLfCKxCoFTIM\"", "\"v=spf1 mx ip4:144.41.3.88/32 ip4:144.41.4.88/31 ip4:144.41.4.126/32 ip6:2001:7c0:2700:1004::126/64 ~all\"", "\"cisco-ci-domain-verification=60220318273c3421738b516cfa761de634db33b9882755d9c5527296266f8c4\"", "\"MS=ms63560316\"", "\"deepl-domain-verification=0b65569fe50e4b57ad9c2f211d021f7a\"", "\"MS=9097E1765E2931D4EBB2B15E7219C890641E0B23\"" ], "NS": [ "dns3.belwue.de.", "ns1.uni-hohenheim.de.", "dns1.belwue.de.", "ns2.uni-hohenheim.de." ], "SOA": [ "ns1.uni-hohenheim.de. hostmaster.uni-hohenheim.de. 2026081001 21600 3600 604800 3600" ], "CAA": [ "0 issue \"pki.dfn.de\"", "0 issue \"harica.gr\"", "0 issue \"letsencrypt.org\"" ], "DS": [], "DNSKEY": [], "RRSIG": [], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [ "100 10 \"s\" \"x-eduroam:radius.tls\" \"\" _radsec._tcp.eduroam.de." ], "TLSA": [], "SSHFP": [] }, "ipv4": [ "144.41.103.105" ], "ipv6": [] }, "mail": { "spf": "v=spf1 mx ip4:144.41.3.88/32 ip4:144.41.4.88/31 ip4:144.41.4.126/32 ip6:2001:7c0:2700:1004::126/64 ~all", "dmarc": "", "dkim_selector": "x", "dkim_host": "", "dkim": "", "spf_analysis": { "valid": true, "lookups": 1, "final": "~all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": false, "policy": "" }, "bimi": "", "mta_sts": "v=STSv1; id=20231114T090101Z;", "tls_rpt": "v=TLSRPTv1;rua=mailto:sts-reports@uni-hohenheim.de" }, "advanced": { "ptr": "typo3.rz.uni-hohenheim.de", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "144.41.103.105" ], "time_ms": 61.78 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "144.41.103.105" ], "time_ms": 296.91 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "144.41.103.105" ], "time_ms": 29.29 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "144.41.103.105" ], "time_ms": 357.78 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "144.41.103.105" ], "time_ms": 47.69 } ] } }, "ssl": { "available": true, "issuer": "Hellenic Academic and Research Institutions CA", "subject": "uni-hohenheim.de", "valid_from": "2026-08-10T01:51:38-05:00", "valid_to": "2027-02-25T00:51:37-06:00", "days_remaining": 198, "san": [ "uni-hohenheim.de", "*.uni-hohenheim.de" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_256_GCM_SHA384" }, "http": { "url": "https://www.uni-hohenheim.de/", "status": "HTTP/1.1 200 OK", "http_version": "2", "headers": { "location": "https://www.uni-hohenheim.de/", "connection": "close", "content-length": "75587", "date": "Mon, 10 Aug 2026 18:03:11 GMT", "strict-transport-security": "max-age=31536000; includeSubdomains", "x-frame-options": "SAMEORIGIN", "x-xss-protection": "1; mode=block", "x-content-type-options": "nosniff", "cache-control": "max-age=0", "expires": "Mon, 10 Aug 2026 18:03:11 GMT", "x-ua-compatible": "IE=edge", "content-type": "text/html; charset=utf-8", "access-control-allow-origin": "*" }, "security_checks": { "strict-transport-security": true, "content-security-policy": false, "x-content-type-options": true, "x-frame-options": true, "referrer-policy": false, "permissions-policy": false, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "", "powered_by": "" }, "webpage": { "url": "https://www.uni-hohenheim.de/", "title": "Universität Hohenheim: Studieren & forschen in Stuttgart", "description": "Studieren und forschen am schönsten Campus des Landes. Bewerben Sie sich für unsere Bachelor- und Master-Studiengänge.", "success": true, "error": "", "status": 200 }, "network": { "144.41.103.105": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "smtp1.rz.uni-hohenheim.de", "ports": [ { "port": 25, "open": false, "time_ms": 1.1, "banner": "", "error": "Network is unreachable" }, { "port": 465, "open": false, "time_ms": 4018.1, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4020.7, "banner": "", "error": "Connection timed out" } ] }, "visitor": { "ip": "216.73.217.62", "reverse": "", "country": "", "country_code": "", "region": "", "city": "", "latitude": null, "longitude": null, "isp": "", "organization": "", "asn": "", "timezone": "", "browser": "Other", "os": "Other", "language": "", "user_agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)", "is_bot": true, "cloudflare": false }, "analysis_time_ms": 91.81 }