{
    "ok": true,
    "domain": "hpi.de",
    "generated_at": "2026-08-11T07:12:47-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 83,
        "label": "Good",
        "categories": {
            "dns": 80,
            "mail": 90,
            "security": 73,
            "network": 70,
            "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": "2 IPv4 address(es) detected."
            },
            {
                "category": "dns",
                "title": "IPv6 (AAAA)",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0,
                "detail": "2 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": 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": "2 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": "60 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": 0,
                "lost_points": 30,
                "detail": "PTR not detected."
            },
            {
                "category": "network",
                "title": "IPv4 diversity",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0,
                "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/2 200 "
            },
            {
                "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": "2 IPv4 address(es) detected.",
                "category": "dns",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "IPv6 (AAAA)",
                "detail": "2 IPv6 address(es) detected.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "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": "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": "2 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": "60 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": "error",
                "title": "PTR reverse DNS",
                "detail": "PTR not detected.",
                "category": "network",
                "max_points": 30,
                "earned_points": 0,
                "lost_points": 30
            },
            {
                "level": "ok",
                "title": "IPv4 diversity",
                "detail": "Two or more IPv4 addresses receive full points.",
                "category": "network",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0
            },
            {
                "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/2 200 ",
                "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": {
            "A": [
                "104.20.37.155",
                "172.66.164.76"
            ],
            "AAAA": [
                "2606:4700:10::ac42:a44c",
                "2606:4700:10::6814:259b"
            ],
            "CNAME": [],
            "MX": [
                "10 mail2.hpi.uni-potsdam.de.",
                "20 mail3.hpi.uni-potsdam.de."
            ],
            "TXT": [
                "\"v=spf1 mx include:_spf.eu.messagegears.net include:spf.protection.outlook.com ip4:141.89.221.252 ip4:141.89.221.132 a:hpi.managed-otrs.com ~all\"",
                "\"successfactors-site-verification=NWM5MGE5OGRiOTlkMzIxNGMzY2MyOTdmNjhlM2IxYzk4MzZjMzFjMzVlYmNhZWJhOGU3ZDMyYTA4NjY1MjliMw==\"",
                "\"adobe-idp-site-verification=b6c090cb7d9b25e647241721d58e9c0f409043ed5fee95518cde252f23196f7a\"",
                "\"MS=ms44865061\"",
                "\"apple-domain-verification=yDgbolXT8d89WWs6\"",
                "\"d365mktkey=gibcDyqoY9eO87F4rw4l9cv8VwirsnRjvRgJcjpDYYgx\"",
                "\"perplexity-ai-domain-verification-wg1x04=CEGavzabOVuWMBfGqFlXoT1sK\"",
                "\"google-site-verification=shC4y3WeoKxaiQGgPp51sXkcpV1kn9P451_OrWnxSLc\"",
                "\"asv=9daefb29545c062d0113cd9fcb4d5c49\"",
                "\"mentimeter-6eeac9ef-e4e9-467c-ab56-e0bc39841ab4\"",
                "\"ahrefs-site-verification_035fb4d9bc76499cdbe44d36da7fac1c3c47cc082c72157b3dd0f0202e66b9cf\"",
                "\"HARICA-eTN75usKDoRotJqF54V\"",
                "\"MS=C81B4AE128C478099F4E9AE8116D784BEBDB871E\"",
                "\"docusign=d73a39b3-8deb-464f-9ec1-ece9cb3e6121\"",
                "\"miro-verification=d6f0f1c49588e224acbf943e34b7a112f01620e1\"",
                "\"openai-domain-verification=dv-sEBgIrRGG6Ru1WdPcXAqJLxD\""
            ],
            "NS": [
                "www8.hpi-web.de.",
                "dns1.hpi.uni-potsdam.de.",
                "www7.hpi.de.",
                "mail3.hpi.uni-potsdam.de."
            ],
            "SOA": [
                "dns1.hpi.uni-potsdam.de. admin.hpi.uni-potsdam.de. 2026081001 28800 7200 604800 3600"
            ],
            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "104.20.37.155",
            "172.66.164.76"
        ],
        "ipv6": [
            "2606:4700:10::ac42:a44c",
            "2606:4700:10::6814:259b"
        ]
    },
    "mail": {
        "spf": "v=spf1 mx include:_spf.eu.messagegears.net include:spf.protection.outlook.com ip4:141.89.221.252 ip4:141.89.221.132 a:hpi.managed-otrs.com ~all",
        "dmarc": "v=DMARC1;p=reject;rua=mailto:dmarc-adm@hpi.de;ruf=mailto:dmarc-forensics@hpi.de",
        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.hpi.de",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwzHoPpmFk8jvWiHCVS71RtoN9VI2BB8w7ez5SIJvRFqJg9ggG5LWQo7+tx3p1xOMKRxasnUtiXO6eMx4yxpUShv1My7nXhNm8bBL7RYLX92Z7gTOmoFv13ITprV67q0/ekfMDxLwKffyr4RdDnAobXvtVmZLJ+trcSFgD18R8R23HET0RIr/B3on6xw6u8abQpj1Olh38ronVp7NZp2FEDktJmOf/hhBUTeN3hmRtukzeWn99irHJVppIe9fVdxRh1C1ihRu/Gv/MKYCzFQjI1jvzp2BRP46YT7ZpcT+glCdvj8R+8EtTFnF8ala9AYFkSlr+m2iawpYxGB5KyxVrQIDAQAB;",
        "spf_analysis": {
            "valid": true,
            "lookups": 4,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "104.20.37.155",
                        "172.66.164.76"
                    ],
                    "time_ms": 159.57
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "104.20.37.155",
                        "172.66.164.76"
                    ],
                    "time_ms": 280.97
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "104.20.37.155",
                        "172.66.164.76"
                    ],
                    "time_ms": 206.11
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "104.20.37.155",
                        "172.66.164.76"
                    ],
                    "time_ms": 1472.06
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "104.20.37.155",
                        "172.66.164.76"
                    ],
                    "time_ms": 433.68
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Google Trust Services",
        "subject": "hpi.de",
        "valid_from": "2026-07-12T10:47:40-05:00",
        "valid_to": "2026-10-10T11:47:37-05:00",
        "days_remaining": 60,
        "san": [
            "hpi.de"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://hpi.de/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "date": "Tue, 11 Aug 2026 12:12:38 GMT",
            "content-type": "text/html; charset=utf-8",
            "server": "cloudflare",
            "content-language": "de-DE",
            "strict-transport-security": "max-age=2592000",
            "vary": "Accept-Encoding",
            "cache-control": "max-age=0",
            "expires": "Tue, 11 Aug 2026 12:12:37 GMT",
            "x-ua-compatible": "IE=edge",
            "x-content-type-options": "nosniff",
            "cf-cache-status": "DYNAMIC",
            "cf-ray": "a297264f5cbf119b-ORD"
        },
        "security_checks": {
            "strict-transport-security": true,
            "content-security-policy": false,
            "x-content-type-options": true,
            "x-frame-options": false,
            "referrer-policy": false,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "cloudflare",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://hpi.de/",
        "title": "Hasso-Plattner-Institut | Hasso-Plattner-Institut",
        "description": "Das HPI ist eines der führenden Informatikinstitute, das durch Forschung, Lehre, Diversität und Kollaboration digitale Innovationen vorantreibt.",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "104.20.37.155": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "172.66.164.76": {
            "success": true,
            "country": "United States",
            "country_code": "US",
            "region": "California",
            "city": "San Francisco",
            "latitude": 37.7749113,
            "longitude": -122.4185412,
            "asn": 13335,
            "organization": "Cloudflare, Inc.",
            "isp": "Cloudflare, Inc.",
            "timezone": "America/Los_Angeles"
        }
    },
    "smtp": {
        "host": "mail2.hpi.uni-potsdam.de",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 117.8,
                "banner": "",
                "error": "Network is unreachable"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4136.1,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4017.7,
                "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": 116.76
}