{
    "ok": true,
    "domain": "kt.com",
    "generated_at": "2026-08-11T19:19:44-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 66,
        "label": "Fair",
        "categories": {
            "dns": 70,
            "mail": 90,
            "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."
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            {
                "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": "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": "100 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/1.1 405 Not Allowed"
            },
            {
                "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": "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": "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": "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": "100 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/1.1 405 Not Allowed",
                "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": [
                "14.63.149.115"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "10 mail.kt.com."
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            "TXT": [
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                "\"v=spf1 ip4:14.63.245.0/24 ip4:211.252.120.49 ip4:211.252.120.84 ip4:211.252.120.117 ip4:221.168.51.0/24 include:spf.protection.outlook.com include:_spf.google.com -all\"",
                "\"cursor-domain-verification-x58ajr=tQlaUafI5TIrYs7dy31uyJlvA\"",
                "\"atlassian-domain-verification=UB8nYcMxWXtDXlkeuPDzkg/etVi1Q7rBSlliflmfLzoGbI/Cc/ivaz7KWYdzkZFk\"",
                "\"miro-verification=16b6bc73fdc188e3b3e94b68c9d8017d88596cea\"",
                "\"domain-verification=e8268a23e9d00f3988444d21aa824918c09f79cdb0b50e1837a6e637bade0dcb\"",
                "\"openai-domain-verification=dv-23mJCb6YJahhstCHDTp4iGR4\"",
                "\"lovable_verification=SS5nZePJPzAHu1M4NwKC\"",
                "\"I/8q5wh8AOSunmUpRY1OlIz/ieYea8NEEfCI6t75jg3Jo8laNOWEXAKsGYUq+btNl7s9gPdmdLPaQn3Jrgp5Eg==\"",
                "\"CAue/yKV5UsLfDauaNj7n5jRyJvVSa67C1HnjlD3ANI2bEfPFJlTaojiH8VbH/GF2eVwHaKgVpLlY+t3LjzOFw==\"",
                "\"facebook-domain-verification=bykbwt2ft1n3brozmw5841vxt5mj35\"",
                "\"google-site-verification=bdgSgFHc0_YSHgIFZZy-5sqGn2kxH8RApVumDPhIn64\"",
                "\"atlassian-sending-domain-verification=501e13ea-de52-4c49-85d9-9a56ce9a3ac4\"",
                "\"asv=dabb51d2bee08b9b5f985d89d54af954\"",
                "\"google-site-verification=MuHitm-zWDyMXMZXYyEqxE98W6kcfL4Ee1Ph9fPYF2Q\"",
                "\"anthropic-domain-verification-1rmsq2=0kncP3nXvHrpEoPiteUY5s9ud\"",
                "\"apple-domain-verification=TYAcaeeuRZe57n3G\"",
                "\"google-site-verification=DmtHvV4Zcn50oYNajz6Vx3HUclqF9UB4r8vU-o8H2sE\"",
                "\"google-gws-recovery-domain-verification=65957383\""
            ],
            "NS": [
                "name3.kt.co.kr.",
                "name.kt.co.kr.",
                "name2.kt.co.kr."
            ],
            "SOA": [
                "name.kt.co.kr. boan.kt.co.kr. 2026081102 10800 3600 1209600 86400"
            ],
            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [
                ";; communications error to 69.64.44.20#53: timed out"
            ],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "14.63.149.115"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 ip4:14.63.245.0/24 ip4:211.252.120.49 ip4:211.252.120.84 ip4:211.252.120.117 ip4:221.168.51.0/24 include:spf.protection.outlook.com include:_spf.google.com -all",
        "dmarc": "v=DMARC1; p=none; rua=mailto:group.helpdesk@kt.com",
        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.kt.com",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx8vDKZ6oXDqSiRNzo8BPNzPMyS47A5DjUT1Lo15iUgAwbz/C60OePKsfaneU4TtoESYcy9aL8+r5W+S6HT4c59Z3Fy9dq6ZkKzG20Q0ZOqM+g61B/twBLMGdGlfai5Ss6kHaro6ZABgJeMmHZ2TAOgtJoV+ENFhaRssijO0fEXmku2zjl5stDxB3VAevcYh4FTOJkrbkGFaA+z36jyoWWPkAIJEvogJHTrAt91dSquY7D8BUs/qXQcMjPoTtwdVPEbewfQVq1Jh+zvGHC8+QxJkgnFU1O+cpp6qwXsWl9FslV1qCcfl5iEBUps+HBQiAMiH5nKPiXFeS2W3e1qiH6QIDAQAB;",
        "spf_analysis": {
            "valid": true,
            "lookups": 2,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
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                    ],
                    "time_ms": 66.19
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "14.63.149.115"
                    ],
                    "time_ms": 861.06
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                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                    ],
                    "time_ms": 1736.82
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "14.63.149.115"
                    ],
                    "time_ms": 434.93
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "14.63.149.115"
                    ],
                    "time_ms": 64.86
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Sectigo Limited",
        "subject": "kt.com",
        "valid_from": "2025-10-19T19:00:00-05:00",
        "valid_to": "2026-11-20T17:59:59-06:00",
        "days_remaining": 100,
        "san": [
            "kt.com",
            "www.kt.com"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://kt.com/",
        "status": "HTTP/1.1 405 Not Allowed",
        "http_version": "2",
        "headers": {
            "date": "Wed, 12 Aug 2026 00:19:33 GMT",
            "content-type": "text/html",
            "content-length": "166",
            "connection": "keep-alive",
            "allow": "GET, POST"
        },
        "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": "",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.kt.com/",
        "title": "KT | 대한민국 대표 통신기업 | 인터넷·TV·스마트폰 공식 채널 안내 | kt.com",
        "description": "KT(주식회사 케이티) 공식 기업 사이트(kt.com)입니다. 스마트폰·인터넷·TV 공식 구매는 KT 공식 직영 온라인샵 shop.kt.com(KT 다이렉트샵)에서 가능합니다. KT 대리점·KT스토어·KT몰과는 별개의 KT 공식 직영 채널입니다.",
        "success": true,
        "error": "",
        "status": 206
    },
    "network": {
        "14.63.149.115": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "mail.kt.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 220,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4018.7,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4227.8,
                "banner": "",
                "error": "Connection timed out"
            }
        ]
    },
    "visitor": {
        "ip": "216.73.216.212",
        "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": 104.14
}