{
    "ok": true,
    "domain": "mdpi.com",
    "generated_at": "2026-08-08T17:32:31-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 76,
        "label": "Good",
        "categories": {
            "dns": 75,
            "mail": 90,
            "security": 69,
            "network": 100,
            "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": "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": "2 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": 0,
                "lost_points": 10,
                "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": 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": "129 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": 4,
                "lost_points": 31,
                "detail": "1 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: a23-45-46-206.deploy.static.akamaitechnologies.com"
            },
            {
                "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": 0,
                "lost_points": 40,
                "detail": "HTTP/2 403 "
            },
            {
                "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": "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": "2 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": "error",
                "title": "DNS propagation",
                "detail": "Agreement between public resolvers.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10
            },
            {
                "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": "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": "129 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": "1 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 4,
                "lost_points": 31
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: a23-45-46-206.deploy.static.akamaitechnologies.com",
                "category": "network",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0
            },
            {
                "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": "error",
                "title": "HTTP response",
                "detail": "HTTP/2 403 ",
                "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": [
                "23.45.46.206",
                "23.45.46.199"
            ],
            "AAAA": [
                "2600:1407:7400:14::17d7:bed",
                "2600:1407:7400:14::17d7:bf3"
            ],
            "CNAME": [],
            "MX": [
                "10 mail.mdpi.com."
            ],
            "TXT": [
                "\"teamtailor=3bfe85f552a3915e3ad4b23af293ac47\"",
                "\"teamtailor=bd3f6e65bf12733c2239b3551a5120b7\"",
                "\"teamtailor-domain-verification=a283d2897d2a3994d80f17065454404b\"",
                "\"yahoo-verification-key=puT8WI8WEun8VA7UT6avJY4Ck+DwplIauEM9YJmzOB4=\"",
                "\"MS=ms22287815\"",
                "\"google-site-verification=5HGq1F7H_WX_Q3Qf85UZh5dEVC0fS5UeSizLzGTyw40\"",
                "\"teamtailor=ea0bfb03d594f650556ecf8916782cc6\"",
                "\"teamtailor=8c49eb3de25673dd2d38fea4e2dcce62\"",
                "\"MS=7983DA5502DEB40953AE07AF7287CD4DA1D92273\"",
                "\"teamtailor=58fdad9a36360e0b3926144848860501\"",
                "\"anthropic-domain-verification-0gqk0p=F7Zo1HH7mxxuCicADqZIVVoxw\"",
                "\"google-site-verification=8ILGAlmpYZT-asFMBkmbeopoNQ-tmhDNmTNPiAFMbrk\"",
                "\"teamtailor=77e8a587477a29b8c3593dc9495ecb73\"",
                "\"atlassian-domain-verification=B8vS1pMclo3CtNoM1lEBx67CaALcw0VrjLBCUcyidI3VnIvUECd752eWuaJ6ni3H\"",
                "\"v=spf1 mx include:spf.mdpi.com include:25322191.spf10.hubspotemail.net include:spf.protection.outlook.com -all\""
            ],
            "NS": [
                "tia.ns.cloudflare.com.",
                "duke.ns.cloudflare.com."
            ],
            "SOA": [
                "duke.ns.cloudflare.com. dns.cloudflare.com. 2411407114 10000 2400 604800 1800"
            ],
            "CAA": [
                "0 issue \"letsencrypt.org\"",
                "0 issue \"certainly.com\"",
                "0 issue \"amazonaws.com\"",
                "0 issue \"pki.goog\"",
                "0 issue \"digicert.com\"",
                "0 issue \"zerossl.com\""
            ],
            "DS": [],
            "DNSKEY": [
                "257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==",
                "256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA=="
            ],
            "RRSIG": [],
            "NSEC": [
                "\\000.mdpi.com. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI CAA"
            ],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "23.45.46.206",
            "23.45.46.199"
        ],
        "ipv6": [
            "2600:1407:7400:14::17d7:bed",
            "2600:1407:7400:14::17d7:bf3"
        ]
    },
    "mail": {
        "spf": "v=spf1 mx include:spf.mdpi.com include:25322191.spf10.hubspotemail.net include:spf.protection.outlook.com -all",
        "dmarc": "v=DMARC1;p=quarantine;rua=mailto:dmarc_agg@dmarc.everest.email;ruf=mailto:dmarc_fr@dmarc.everest.email",
        "dkim_selector": "email",
        "dkim_host": "email._domainkey.mdpi.com",
        "dkim": "v=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQChp5p1Khh4sTpXWvyVB8VLeAmO1A2FfwEEYT1zPXfqxnXnfNLKDugUjcFvJa3fbVMwK9Ll9ENnLOZLAjonf4BSy5ukCoMY99or0dkDfNavnsh+h7L/rmHPL7gHOyEmpUJlRO8rz4BRM6OvbCmPKEwWcDfNMkEycyj6/zJkmlSVXwIDAQAB",
        "spf_analysis": {
            "valid": true,
            "lookups": 4,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "quarantine"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "a23-45-46-206.deploy.static.akamaitechnologies.com",
        "propagation": {
            "consistent": false,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "23.45.46.199",
                        "23.45.46.206"
                    ],
                    "time_ms": 79.44
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "23.45.46.199",
                        "23.45.46.206"
                    ],
                    "time_ms": 46.5
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "23.215.11.237",
                        "23.215.11.243"
                    ],
                    "time_ms": 110.4
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "23.45.46.199",
                        "23.45.46.206"
                    ],
                    "time_ms": 118.22
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "23.48.224.202",
                        "23.48.224.203"
                    ],
                    "time_ms": 55.11
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "DigiCert Inc",
        "subject": "*.mdpi.com",
        "valid_from": "2025-12-13T18:00:00-06:00",
        "valid_to": "2026-12-15T17:59:59-06:00",
        "days_remaining": 129,
        "san": [
            "*.mdpi.com",
            "mdpi.com"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://mdpi.com/",
        "status": "HTTP/2 403 ",
        "http_version": "3",
        "headers": {
            "mime-version": "1.0",
            "content-type": "text/html",
            "content-length": "358",
            "expires": "Sat, 08 Aug 2026 22:32:23 GMT",
            "cache-control": "max-age=0, no-cache, no-store",
            "pragma": "no-cache",
            "date": "Sat, 08 Aug 2026 22:32:23 GMT",
            "strict-transport-security": "max-age=31536000",
            "akamai-grn": "0.4e18d017.1786228343.9c7514df",
            "server-timing": "ak_p; desc=\"1786228343086_399513678_2624918751_20_12859_6_9_15\";dur=1"
        },
        "security_checks": {
            "strict-transport-security": true,
            "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": "",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://mdpi.com/",
        "title": "Access Denied",
        "description": "",
        "success": true,
        "error": "",
        "status": 403
    },
    "network": {
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            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "23.45.46.199": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "mail.mdpi.com",
        "ports": [
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                "port": 25,
                "open": false,
                "time_ms": 3.1,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4006.6,
                "banner": "",
                "error": "Connection timed out"
            },
            {
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                "open": false,
                "time_ms": 4020,
                "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": 7060.63
}