{
    "ok": true,
    "domain": "mpg.de",
    "generated_at": "2026-08-08T19:30:57-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 75,
        "label": "Good",
        "categories": {
            "dns": 85,
            "mail": 45,
            "security": 81,
            "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": "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": 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": 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": "90 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": 16,
                "lost_points": 19,
                "detail": "4 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: www.mpg.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": [
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                "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": "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": "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": "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": "90 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": "4 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 16,
                "lost_points": 19
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: www.mpg.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": {
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                "134.76.31.198"
            ],
            "AAAA": [],
            "CNAME": [],
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                "\"v=spf1 mx include:spf.gwdg.de include:spf.yve-tool.de ip4:155.56.221.13 ip4:155.56.221.14 ~all\"",
                "\"google-site-verification=XHSgSiW3S-oNc6utmVvWr_K-iNo1ZpYHGDMV1ev8txw\"",
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                "\"hibp-verify=dweb_0tywy72sz0avnp2yfrm5v1g9\"",
                "\"google-site-verification=dnSBuenbktdrWBa2AyYCTsb6kohTtitwQvtLHzFcXWM\"",
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            "NS": [
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                "dns2.gwdg.de.",
                "dns3.gwdg.de.",
                "sat.mpcdf.mpg.de."
            ],
            "SOA": [
                "dns1.gwdg.de. hostmaster.gwdg.de. 805176015 21600 3600 2419200 3600"
            ],
            "CAA": [],
            "DS": [
                "4040 13 2 5BAB7EC9421F6208653C275DC509C20AE56EDC47E45DCDCB7F5F89B0 3F0C75CD"
            ],
            "DNSKEY": [
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                "256 3 13 gwhL9ZzlkzOW0tx0fa85QRhl7llB8LpwsvsOJrXnE/Jso0R/IPPzANds 2/1irACMbj7jxmaY7wA/9gu9Ps3lyg=="
            ],
            "RRSIG": [
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                "MX 13 2 3600 20260818030014 20260808025514 44827 mpg.de. MlwoycLAb1OWCTSirQQ+RkxSo1++hXf5WOqcZLfo33kNYCdz0OnHuPBA EJJumoyhqrkA4DoB8H414AJhR4LnMw==",
                "A 13 2 3600 20260818030014 20260808025514 44827 mpg.de. HG49LULQzeZ1iE9aZygj1hIRk9Z7P2xvsdPi4TeMxwGUy2dbh+1iZgFV 8kMO3OIYn+SF7cAQUAqCXf/BRwqsUw==",
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            "NSEC": [
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            ],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
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        ],
        "ipv6": []
    },
    "mail": {
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        "dmarc": "",
        "dkim_selector": "x",
        "dkim_host": "",
        "dkim": "",
        "spf_analysis": {
            "valid": true,
            "lookups": 3,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": false,
            "policy": ""
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "www.mpg.de",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
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                    ],
                    "time_ms": 119.34
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
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                    ],
                    "time_ms": 78.59
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                    ],
                    "time_ms": 157.9
                },
                {
                    "provider": "OpenDNS",
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                    "result": [
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                    ],
                    "time_ms": 296.72
                },
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                    "provider": "AdGuard",
                    "server": "94.140.14.14",
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                    ],
                    "time_ms": 161.45
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Hellenic Academic and Research Institutions CA",
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        "valid_from": "2025-11-07T10:12:09-06:00",
        "valid_to": "2026-11-07T10:12:09-06:00",
        "days_remaining": 90,
        "san": [
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            "mpg.de"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
    },
    "http": {
        "url": "https://www.mpg.de/de",
        "status": "HTTP/1.1 200 OK",
        "http_version": "2",
        "headers": {
            "location": "https://www.mpg.de/de",
            "content": "<html>  <head><title>Moved permanently / Dauerhaft verschoben</title></head>  <body>  <h1>Page has moved permanently</h1><p>Please go to <a href=\"https://www.mpg.de/\">it's new address</a>.</p><br/>  <h1>Seite dauerhaft verschoben</h1><p>Diese Seite ist dauerhaft an <a href=\"https://www.mpg.de/\">diese Stelle</a> umgezogen.</p>  </body>  </html>",
            "server": "Apache",
            "connection": "close",
            "content-length": "0",
            "date": "Sun, 09 Aug 2026 00:30:47 GMT",
            "cache-control": "max-age=0, private, must-revalidate",
            "referrer-policy": "strict-origin-when-cross-origin",
            "x-permitted-cross-domain-policies": "none",
            "x-xss-protection": "0",
            "x-request-id": "6d609e94-4f93-4131-b826-234600c77817",
            "x-ua-compatible": "IE=Edge",
            "x-frame-options": "SAMEORIGIN",
            "x-content-type-options": "nosniff",
            "set-cookie": "_mpg_session_r=MXtMGR6P1rIuVy9mbaK4fLLCHPw%2B28Yv43mtVJ0ThJeGSNzPV%2BbKPV%2Fa54hNHWJb8kTNawwGQP9SCpQFv%2F5caXfE5qgHmUHtYFDRcLjbQVF0L7ZecCjOGEwpzHBaAoXWJO1rmO0Erchmm%2F%2B%2FC0U1zbLlCqyY2%2FWcreQF7IgK6DuTykQixaXZP6vvnt6485JlnbnzIMnMUY5%2Bm0pY0xoE2fuxt8%2FMTp94TYcwlHU9vwVeN0%2F2sWnkYcDA3J9kajSvfwImgAltwR3C384AdlfQbPq5vZidZw%3D%3D--PT1QPfwpNtPCYdOP--HV4RtVugVrqEWugVZOGEwQ%3D%3D; path=/; httponly; samesite=lax",
            "transfer-encoding": "chunked",
            "status": "200 OK",
            "content-type": "text/html; charset=utf-8",
            "vary": "Accept",
            "link": "</assets/roboto-v20-latin-ext_latin_greek-ext_greek_cyrillic-ext_cyrillic-700-8d2872cf0efbd26ce09519f2ebe27fb09f148125cf65964890cc98562e8d7aa3.woff2>; rel=preload; as=font; type=font/woff2; crossorigin=anonymous",
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            "etag": "W/\"95984c12853095ee77f5f75036fbd9d7\""
        },
        "security_checks": {
            "strict-transport-security": false,
            "content-security-policy": true,
            "x-content-type-options": true,
            "x-frame-options": true,
            "referrer-policy": true,
            "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://mpg.de/",
        "title": "",
        "description": "",
        "success": false,
        "error": "OpenSSL SSL_read: error:0A000126:SSL routines::unexpected eof while reading, errno 0"
    },
    "network": {
        "134.76.31.198": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "c1236.mx.srv.dfn.de",
        "ports": [
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                "port": 25,
                "open": false,
                "time_ms": 116.8,
                "banner": "",
                "error": "Connection refused"
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                "port": 465,
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                "time_ms": 4020.9,
                "banner": "",
                "error": "Connection timed out"
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                "port": 587,
                "open": false,
                "time_ms": 4017.3,
                "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": 115.93
}