{
    "ok": true,
    "domain": "korea.ac.kr",
    "generated_at": "2026-08-10T18:40:46-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 79,
        "label": "Good",
        "categories": {
            "dns": 70,
            "mail": 90,
            "security": 73,
            "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": "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": 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": "5 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": "228 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: www.korea.ac.kr"
            },
            {
                "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": [
            {
                "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": "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": "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": "5 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": "228 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: www.korea.ac.kr",
                "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": {
        "records": {
            "A": [
                "163.152.6.10"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "1 ASPMX.L.GOOGLE.COM.",
                "10 ALT3.ASPMX.L.GOOGLE.COM.",
                "10 ALT4.ASPMX.L.GOOGLE.COM.",
                "5 ALT1.ASPMX.L.GOOGLE.COM.",
                "5 ALT2.ASPMX.L.GOOGLE.COM."
            ],
            "TXT": [
                "\"v=spf1 include:_spf1.korea.ac.kr include:_spf2.korea.ac.kr include:_spf.google.com include:_spf.koreauniv.govhiworks.com include:mail.stibee.com include:spf.worksmobile.com include:email.ncloud.com ~all\"",
                "\"_globalsign-domain-verification=9GLZEaOqBw30X_IQprd6CXIa8bJ69MqG8-c0_bJ1nH\"",
                "\"MS=ms40378438\"",
                "\"worksmobile.certification.u22r65s2gjvw2q0vnp.0yg0fzspyldjnp.y8aeso4eb\"",
                "\"MS=8AF8B98722B12D93585780E04315B9F4E2C246EC\"",
                "\"mailer.domain.verification=tgkG8WhKjJXLJZohQH5oTgDlFNmR4L\"",
                "\"_globalsign-domain-verification=zGrIqVE57A1jWwvD8JJ5hOAWX9zvdxx5A4zjeUAYCj\""
            ],
            "NS": [
                "kuccgx.korea.ac.kr.",
                "kucc.korea.ac.kr."
            ],
            "SOA": [
                "kuccgx.korea.ac.kr. root.kuccgx.korea.ac.kr. 2026080703 3600 1800 604800 86400"
            ],
            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "163.152.6.10"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 include:_spf1.korea.ac.kr include:_spf2.korea.ac.kr include:_spf.google.com include:_spf.koreauniv.govhiworks.com include:mail.stibee.com include:spf.worksmobile.com include:email.ncloud.com ~all",
        "dmarc": "v=DMARC1; p=none;",
        "dkim_selector": "google",
        "dkim_host": "google._domainkey.korea.ac.kr",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqw7yKx9xJofq1BMLGL152zFf+D3q2s7nUFqKRh6+8n87h/lv4ind8OCOQKPgOGwrPHRiRxRlUdD1Gz0IALvlFzEAutGfQKK73I+fOgERSWRx2lLhrVGPpEmqPTGhFb6jZctnlIIhJpy/1rQip8kaauWxGBkK43cXPonsGAaIevFeRdbDwoWix5XhQBCLpz5hy1Bsy1+CNgOHqhWAS9Zd7Mzy/aMA7G2u7nkARspKqBWwcGIHfJ7d9MrAJdtO7kokrGtTwOMbtsoVtreFQteqslzO9FcmRRx9V8SA8Kd9Nvl7bSH8udZBkyojH+DLPDM/PDsmQzIMU8eHx0q7bpo7xQIDAQAB",
        "spf_analysis": {
            "valid": true,
            "lookups": 7,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "www.korea.ac.kr",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "163.152.6.10"
                    ],
                    "time_ms": 241.78
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "163.152.6.10"
                    ],
                    "time_ms": 806.94
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "163.152.6.10"
                    ],
                    "time_ms": 395.03
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "163.152.6.10"
                    ],
                    "time_ms": 582.35
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "163.152.6.10"
                    ],
                    "time_ms": 451.06
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "GlobalSign nv-sa",
        "subject": "*.korea.ac.kr",
        "valid_from": "2026-02-23T02:15:31-06:00",
        "valid_to": "2027-03-27T03:15:30-05:00",
        "days_remaining": 228,
        "san": [
            "*.korea.ac.kr",
            "korea.ac.kr"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://www.korea.ac.kr/",
        "status": "HTTP/1.1 200 OK",
        "http_version": "2",
        "headers": {
            "x-content-type-options": "nosniff",
            "strict-transport-security": "max-age=15768000",
            "date": "Mon, 10 Aug 2026 23:40:36 GMT",
            "connection": "keep-alive",
            "location": "https://www.korea.ac.kr/",
            "content-type": "text/html; charset=UTF-8",
            "content-length": "764",
            "cache-control": "no-cache",
            "set-cookie": "JSESSIONID=dUPG6131VycXapB1pMKJFktRWrNNbbSMf1p7CQTzkLTbHay1TKYGuK7CSWq20hWE.amV1c19kb21haW4vbWFpbjEtMw==; Path=/; Secure; HttpOnly; SameSite=Lax",
            "pragma": "no-cache",
            "expires": "Thu, 01 Jan 1970 00:00:00 GMT"
        },
        "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": "",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.korea.ac.kr/",
        "title": "site move",
        "description": "고려대학교 Korea University",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "163.152.6.10": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "ASPMX.L.GOOGLE.COM",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 21.8,
                "banner": "220 mx.google.com ESMTP 586e51a60fabf-459f205c311si9471538fac.255 - gsmtp",
                "error": "No connection"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4009.8,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4019.7,
                "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": 83.21
}