{
    "ok": true,
    "domain": "tu-darmstadt.de",
    "generated_at": "2026-08-09T05:14:22-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 89,
        "label": "Good",
        "categories": {
            "dns": 95,
            "mail": 90,
            "security": 73,
            "network": 85,
            "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": 10,
                "lost_points": 0,
                "detail": "1 IPv6 address(es) detected."
            },
            {
                "category": "dns",
                "title": "Name server redundancy",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "5 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": 15,
                "lost_points": 0,
                "detail": "DS and DNSKEY detected."
            },
            {
                "category": "dns",
                "title": "CAA policy",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "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": 25,
                "lost_points": 0,
                "detail": "DMARC policy published."
            },
            {
                "category": "mail",
                "title": "DKIM",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "A DKIM selector was verified."
            },
            {
                "category": "mail",
                "title": "MTA-STS",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "Mail transport policy."
            },
            {
                "category": "mail",
                "title": "TLS-RPT",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "TLS reporting policy."
            },
            {
                "category": "security",
                "title": "Valid TLS certificate",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0,
                "detail": "181 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": 8,
                "lost_points": 27,
                "detail": "2 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: hrz-srd01.hrz.tu-darmstadt.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": 35,
                "lost_points": 0,
                "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 "
            },
            {
                "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": "ok",
                "title": "IPv6 (AAAA)",
                "detail": "1 IPv6 address(es) detected.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "Name server redundancy",
                "detail": "5 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": "ok",
                "title": "DNSSEC chain",
                "detail": "DS and DNSKEY detected.",
                "category": "dns",
                "max_points": 15,
                "earned_points": 15,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "CAA policy",
                "detail": "Certificate authority restriction.",
                "category": "dns",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "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": "ok",
                "title": "DMARC",
                "detail": "DMARC policy published.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "DKIM",
                "detail": "A DKIM selector was verified.",
                "category": "mail",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "error",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "ok",
                "title": "Valid TLS certificate",
                "detail": "181 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": "2 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 8,
                "lost_points": 27
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: hrz-srd01.hrz.tu-darmstadt.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": "ok",
                "title": "IPv6 connectivity",
                "detail": "AAAA availability.",
                "category": "network",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0
            },
            {
                "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 ",
                "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": {
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                "130.83.47.245"
            ],
            "AAAA": [
                "2001:41b8:83f:1604::47:245"
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            "CNAME": [],
            "MX": [
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                "10 a2681.mx.srv.dfn.de.",
                "10 b2681.mx.srv.dfn.de."
            ],
            "TXT": [
                "\"v=spf1 include:_spf.tu-darmstadt.de ?all\"",
                "\"google-site-verification=MhVJ4YhH6BFMk3VMQ_okf6dDKl64kAu05XQt9F__0qY\"",
                "\"brevo-code:b06168a0ae0d70ff4bd469302deabf93\"",
                "\"ZOOM_verify_9c8RCWNZTp2A1REBULIWUw\"",
                "\"MS=3DB65728A46A4ECFAF5F4A714F39661E1CA144CE\"",
                "\"sophos-domain-verification=58b09958937bb5c99066d94fff466d8f72c294549b004ea1f7fa35a3aa0785be\""
            ],
            "NS": [
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                "ns2.man-da.de.",
                "ans1.net.hrz.tu-darmstadt.de.",
                "ans3.net.hrz.tu-darmstadt.de.",
                "ans2.net.hrz.tu-darmstadt.de."
            ],
            "SOA": [
                "ans1.net.hrz.tu-darmstadt.de. hostmaster.net.hrz.tu-darmstadt.de. 1112608061 21600 3600 3600000 86400"
            ],
            "CAA": [],
            "DS": [
                "61222 8 2 E844484B70316FBD0DDFBB2CA7F6BC5B58ACD3975C06DE64E604D509 03AA1A04"
            ],
            "DNSKEY": [
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                "256 3 8 AwEAAeHPlDUEYlGrokUOtr0mg+LfAgM44Bfey+9gZO4fARM1qGxC0D65 PvXCfjtwzhW8A+X0cZjp3qo7CIaF7w/Ot2p6W/nDaozvYXpXoY9XWzKe GinRCMz1qpTvwZdsdyQrEErUrM2i5cUNZN3nRZG4sympTbulH6dTpCGV NWG1lr7j",
                "256 3 8 AwEAAbc/sEUpdqiMmz54Y+2HPfCU0j58eOV2GcmRyrc9k8t9/WHpJcJ/ GiKVkJ3+axNyr81HJjait7tGQcnSgiwzxC5zGS0/2Vo9wozq2X5yvGqK pc/D5rJcxuSxuL+BrWs04UzZghaKaj3cwRpfem1S0e8oE3bqEKhFDFZT NHgMIEVl"
            ],
            "RRSIG": [
                "NS 8 2 86400 20260905210429 20260806210429 945 tu-darmstadt.de. ktUaFuqlUxhvgM4rhTxrLReGURxCpa3EiCQhZslFqpGCzIycKjbjp4HC r5QkmF7mNr3p8Cn4xUHMb2B9D/YmDzpJiYVofHuC44Od5+wouo7rlxpk 4IR7BcAXu89Dxb4W7cIwXHiWFqUVqBKhaVgwLV1mwHl/VA/R8DsfSrLA Fds=",
                "TXT 8 2 86400 20260905210429 20260806210429 945 tu-darmstadt.de. Z1S0X6TgFimlXGr7mSmG5u7fTVrZocuBIQKxjMNrqfY6m2Fx1o3yR4P4 Fyolm7ATdRkl8WrmURe5zk0oXF0Ivs1mmEJrIEBx96O99rv3lKAl9c4p 3OEqOgABV/U7mV81af04nnFmY6IxdpVJh8kecdglVI4G0YYYYf+4P8b1 JnQ=",
                "AAAA 8 2 86400 20260905210429 20260806210429 945 tu-darmstadt.de. Tz+68t/IbydO24fq51IqVGYz/Fd29kt/vtMmk2Y2+Hslr5FWi5QRKbh8 IjNoYQeookAPuiBXGxX3Rgex4Dtl9Oa75BmSp7V4ioMRHcO94WLDQV6h kDk8PHDlR/NlFayL7UjMfS9+CyoPoGU2N+8kyT3D9C/9nY62OZJ1Xawt d2k=",
                "MX 8 2 86400 20260905210429 20260806210429 945 tu-darmstadt.de. m6nIqIOYoQTi/MSieFabD7yC2zb+MsF5QrWaTuIPJ2Wxk5FhPei59aPm vc7Sk1FKChF6Bjns5YbdRpjDur2X5GM9VNcFtl6Qz/CSGFhZZMYhpoY7 +3GCMPJeJIZOMJtgZpmW1bg8HT236582TuLuj5DdLG8jgimJNNFxYNOv SlA=",
                "DS 8 2 86400 20260817120903 20260803103903 32911 de. jftoh9UaLy3k7EietRtq/h3wMYpCoApLyDG/GSkpy5+4fKavhH4OsrKG 5ULqsL6OmIfFKTTWKUqPvewW0HaAEcSAJqrb84LpzCRwy/umdyFD/2Ku k74lw+OnFkmsDa8F49lfQVKHGcviPLqkgRaqK2yNqcqNTqdBcjEjqEJx Efs="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [
                "100 10 \"S\" \"x-eduroam:radius.tls\" \"\" _radsec._tcp.eduroam.de.",
                "10 100 \"S\" \"SIPS+D2T\" \"\" _sips._tcp.tu-darmstadt.de.",
                "12 100 \"S\" \"SIP+D2T\" \"\" _sip._tcp.tu-darmstadt.de.",
                "14 100 \"S\" \"SIP+D2U\" \"\" _sip._udp.tu-darmstadt.de."
            ],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "130.83.47.245"
        ],
        "ipv6": [
            "2001:41b8:83f:1604::47:245"
        ]
    },
    "mail": {
        "spf": "v=spf1 include:_spf.tu-darmstadt.de ?all",
        "dmarc": "v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com,mailto:postmaster-dmarc@technicalservices.hrz.tu-darmstadt.de;",
        "dkim_selector": "s1",
        "dkim_host": "s1._domainkey.tu-darmstadt.de",
        "dkim": "v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDd62AJgzt30wnoFwHidOTBK2v0+xwVDD9BaEMBpRwzdq3lFYlLjqAq44C9XwIznr+LwsEo2wBKq0650URvSUEKKSXtafKYn/L/VWU5/zjKg1qf0Yxv2MNbOmhpg+FijCcnozE3obc+jS+emna8x/Oe/9FN+1sDIKL+p0W1bekV8QIDAQAB",
        "spf_analysis": {
            "valid": true,
            "lookups": 1,
            "final": "?all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "hrz-srd01.hrz.tu-darmstadt.de",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "130.83.47.245"
                    ],
                    "time_ms": 158
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "130.83.47.245"
                    ],
                    "time_ms": 125.65
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "130.83.47.245"
                    ],
                    "time_ms": 139.48
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "130.83.47.245"
                    ],
                    "time_ms": 215.5
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "130.83.47.245"
                    ],
                    "time_ms": 40.79
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Hellenic Academic and Research Institutions CA",
        "subject": "tu-darmstadt.de",
        "valid_from": "2026-07-23T03:56:11-05:00",
        "valid_to": "2027-02-07T02:56:10-06:00",
        "days_remaining": 181,
        "san": [
            "tu-darmstadt.de"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
    },
    "http": {
        "url": "https://www.tu-darmstadt.de/",
        "status": "HTTP/1.1 200 ",
        "http_version": "2",
        "headers": {
            "date": "Sun, 09 Aug 2026 10:14:12 GMT",
            "server": "Apache",
            "strict-transport-security": "max-age=63072000; includeSubDomains",
            "location": "https://www.tu-darmstadt.de/",
            "content-type": "text/html;charset=UTF-8",
            "x-frame-options": "SAMEORIGIN",
            "via": "1.1 www.tu-darmstadt.de",
            "set-cookie": "JSESSIONID=0938402F0125D95548BA57F87EA71192.wcms-node01; Path=/; HttpOnly;HttpOnly;Secure"
        },
        "security_checks": {
            "strict-transport-security": true,
            "content-security-policy": false,
            "x-content-type-options": false,
            "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": "Apache",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.tu-darmstadt.de/",
        "title": "Home – TU Darmstadt",
        "description": "Homepage der Technischen Universität Darmstadt,\nUniversität in Hessen, Deutschland.",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "130.83.47.245": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "c2681.mx.srv.dfn.de",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 125.7,
                "banner": "",
                "error": "Network is unreachable"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4017.1,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4147.3,
                "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": 101.78
}