{
    "ok": true,
    "domain": "dnb.de",
    "generated_at": "2026-08-10T10:45:58-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 67,
        "label": "Fair",
        "categories": {
            "dns": 90,
            "mail": 70,
            "security": 65,
            "network": 20,
            "availability": 60
        },
        "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": "3 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": 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": "1 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": 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": "70 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": 0,
                "lost_points": 35,
                "detail": "0 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": 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": 0,
                "lost_points": 40,
                "detail": "HTTP/1.1 400 Bad Request"
            },
            {
                "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": "3 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": "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": "1 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": "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": "70 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": "error",
                "title": "HTTP security headers",
                "detail": "0 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "level": "error",
                "title": "PTR reverse DNS",
                "detail": "PTR not detected.",
                "category": "network",
                "max_points": 30,
                "earned_points": 0,
                "lost_points": 30
            },
            {
                "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": "error",
                "title": "HTTP response",
                "detail": "HTTP/1.1 400 Bad Request",
                "category": "availability",
                "max_points": 40,
                "earned_points": 0,
                "lost_points": 40
            },
            {
                "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": [
                "80.245.152.115"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "10 mail.dnb.de."
            ],
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                "\"D-TRUST=KKKUHK6P9JKEG4UBTTKDD7G\"",
                "\"dpt1o6o9n724ailkbvenucgojo\"",
                "\"_telesec-domain-validation=354984_2025-11-12_v6FUw1EhBjGSPkL32qicqJF202awPgPwvcBFmQC6X2KrH98T6K\"",
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                "\"MS=30B747176C24FC3CAAA9EB788B4F238C5A2AEFBB\"",
                "\"HARICA-vsb4DtMSLpgoh8ciqvr\"",
                "\"google-site-verification=Ns363X-mIFGqfV3eWNlK701YmMO6sra99f_b28rnchY\"",
                "\"v=spf1 ip4:193.175.100.144 ip4:193.175.100.0/32 include:_spf.pretix.eu include:oclcspf3.oclc.org include:spf.init.de ~all\""
            ],
            "NS": [
                "dns-1.dfn.de.",
                "ns0.dnb.de.",
                "ns1.dnb.de."
            ],
            "SOA": [
                "ns.dnb.de. hostmaster.dnb.de. 2026070288 3600 3600 2419200 3600"
            ],
            "CAA": [
                "0 issue \"letsencrypt.org\"",
                "0 issue \"telesec.de\"",
                "0 issue \"harica.gr\"",
                "0 issue \"pki.dfn.de\"",
                "0 issue \"d-trust.net\"",
                "0 issue \"sectigo.com\""
            ],
            "DS": [
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            "DNSKEY": [
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                "257 3 8 AwEAAca+M/xqp1PVJyR50Vm5xgEKZq8EOJssOHVTUmodWP8YFsebWo2+ A+yxpeKJHkWFZdDPWodEOynztcnjYLbcfVaQU9iRcDPYsVVmSuijP+B/ A7p2kWbIO62NZP/mELf9w+q/JD6lx2pXvMbgZb6eLRxylxlAIl1YhbA0 loJHnr51kplpPJtC+OHHFzPkaL2vOmT+dfwBxQ7UueAVYQseUvc+WnpS EFwAgwmHsx1fePwdI7Xoy0tjhi4/bfPjtgQwhp7YgsTbaMK7E3vjwaRa jGmxkHsLuC19y8FjXUKUzktzWjrd/ZaUa2Q1KoWewwjAsVZzkoRWHH3E 1OQgtb0vmlc="
            ],
            "RRSIG": [
                "NS 8 2 3600 20260824034225 20260725024521 32778 dnb.de. mlYo2gxwJIaMETtHrrPnK3r1nORhj+KpoYPfULn4RwO599gNez8Weukc /1snfeAs7dc1Y9fNXKeD2jSxpbVKeAy7WFcJUPQOhs50EkrHHDZ8BS1U 5D/etoMuQDVyMoVd++hfPVF+1B8kXGddy48fsKm3hb+p9vu56iKZ360s teI=",
                "SOA 8 2 3600 20260909112618 20260810102618 32778 dnb.de. Bp3zFV8FwxHUxRst3w0cbLJpxOVvad1RCi0h6fw8ecg2TSDeVe0DHjsX N+kutSVTIpglbf2i5W0+Kdg3xarPJitO2lLH3vCEKTA12CFFITf1uhfX ch6pdhu1uMQ+Z9VLCOtFW+lLZQR65noGu/fi9fO5KwSpd36LyDpPudwu 4wM=",
                "DS 8 2 86400 20260817120903 20260803103903 32911 de. LuDFEQz8T0TcQG2bYuy/7xUT4OXlmhrzBFnFNq76cEASWLrftNWq/XNJ REsZ/BNeidrT5SiFiwQqKP1zeBLdkLsg75wes//CFOt9cXUasIaBYnCW tdoJhLPfG55/WZXvHy72vuX1q4QN/oRfWdqe/kviQAk72uuwzEpmjXN+ QP0=",
                "CAA 8 2 3600 20260825011101 20260726010857 32778 dnb.de. Vqaw+VfcQYKyGqHu3y4+IHisAayK5ZhoR0Kp1AEL2x472+80+aO0unlm glF0jGnN0GtRwzx7GlRsu+k7Su2iAb1vDRc5tQus8qGe1a7jekWhYO3l uNh7KMcsxRkhrzXiL6R3SL2gLZNYOQM52d0LHMdvXr5rCt3N7/Tvt1dA pTc="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [
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            "TLSA": [],
            "SSHFP": []
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            "80.245.152.115"
        ],
        "ipv6": []
    },
    "mail": {
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        "dmarc": "v=DMARC1; p=none;",
        "dkim_selector": "x",
        "dkim_host": "",
        "dkim": "",
        "spf_analysis": {
            "valid": true,
            "lookups": 3,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "v=bimi1; l=https://files.dnb.de/dnb.logo.svg",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "80.245.152.115"
                    ],
                    "time_ms": 198.45
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "80.245.152.115"
                    ],
                    "time_ms": 2291.91
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                    ],
                    "time_ms": 166.49
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                {
                    "provider": "OpenDNS",
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                    "result": [
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                    "time_ms": 649.81
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                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
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                    ],
                    "time_ms": 158.66
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "D-Trust GmbH",
        "subject": "www.dnb.de",
        "valid_from": "2026-04-04T11:32:31-05:00",
        "valid_to": "2026-10-19T11:32:31-05:00",
        "days_remaining": 70,
        "san": [
            "www.dnb.de",
            "www.ddc-deutsch.de",
            "dnb.de",
            "ddc-deutsch.de"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://dnb.de/error_path/400.html?al_req_id=annyKtF62SV5NfBDY8gm_QAACV4",
        "status": "HTTP/1.1 400 Bad Request",
        "http_version": "2",
        "headers": {
            "date": "Mon, 10 Aug 2026 15:45:47 GMT",
            "server": "Apache",
            "set-cookie": "AL_BALANCE-S=$xc/qBZskVHPeqBaQHpDNkqQEib3FwLYms9hIrUaxmfC_mudLFWQ; Path=/; Secure; HttpOnly; SameSite=None",
            "content-length": "123",
            "location": "/error_path/400.html?al_req_id=annyKtF62SV5NfBDY8gm_QAACV4",
            "content-type": "text/html",
            "cache-control": "no-cache",
            "pragma": "no-cache",
            "connection": "close"
        },
        "security_checks": {
            "strict-transport-security": false,
            "content-security-policy": false,
            "x-content-type-options": false,
            "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": "Apache",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.dnb.de/DE/Home/home_node.html",
        "title": "DNB  -  Startseite",
        "description": "Die Deutsche Nationalbibliothek ist die zentrale Archivbibliothek Deutschlands.",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "80.245.152.115": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "mail.dnb.de",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 115.7,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4135.2,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4020.9,
                "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": 82.27
}