{
    "ok": true,
    "domain": "ntv.co.jp",
    "generated_at": "2026-08-09T03:35:03-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 91,
        "label": "Excellent",
        "categories": {
            "dns": 95,
            "mail": 90,
            "security": 77,
            "network": 100,
            "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": "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",
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                "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": 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",
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                "earned_points": 20,
                "lost_points": 0,
                "detail": "1 MX record(s)."
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            {
                "category": "mail",
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                "max_points": 25,
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                "lost_points": 0,
                "detail": "SPF policy published."
            },
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                "category": "mail",
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                "detail": "DMARC policy published."
            },
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                "category": "mail",
                "title": "DKIM",
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                "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",
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                "earned_points": 55,
                "lost_points": 0,
                "detail": "92 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": 12,
                "lost_points": 23,
                "detail": "3 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: server-13-224-138-28.kix82.r.cloudfront.net"
            },
            {
                "category": "network",
                "title": "IPv4 diversity",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0,
                "detail": "Two or more IPv4 addresses receive full points."
            },
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                "category": "network",
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                "earned_points": 35,
                "lost_points": 0,
                "detail": "AAAA availability."
            },
            {
                "category": "availability",
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                "detail": "At least one address family must resolve."
            },
            {
                "category": "availability",
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                "earned_points": 40,
                "lost_points": 0,
                "detail": "HTTP/2 200 "
            },
            {
                "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",
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                "earned_points": 30,
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            },
            {
                "level": "ok",
                "title": "IPv6 (AAAA)",
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                "lost_points": 0
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            {
                "level": "ok",
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                "level": "ok",
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            {
                "level": "ok",
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                "level": "ok",
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            },
            {
                "level": "ok",
                "title": "MX records",
                "detail": "1 MX record(s).",
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                "max_points": 20,
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                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "SPF",
                "detail": "SPF policy published.",
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                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "DMARC",
                "detail": "DMARC policy published.",
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                "max_points": 25,
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                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "DKIM",
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                "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": "92 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": "3 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 12,
                "lost_points": 23
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: server-13-224-138-28.kix82.r.cloudfront.net",
                "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": "ok",
                "title": "HTTP response",
                "detail": "HTTP/2 200 ",
                "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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                "13.224.138.28",
                "13.224.138.16"
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            "AAAA": [
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                "2600:9000:21b6:e600:1a:f637:5300:93a1"
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            "CNAME": [],
            "MX": [
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                "\"google-site-verification=z8K24W4zXWfu_lH__t6t2mD8pNS-dOKJRttrk-Fw5vk\"",
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            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "13.224.138.28",
            "13.224.138.16"
        ],
        "ipv6": [
            "2600:9000:21b6:f000:1a:f637:5300:93a1",
            "2600:9000:21b6:e600:1a:f637:5300:93a1"
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    "mail": {
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        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.ntv.co.jp",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzgpigOuvcm1OaYZZOdK8I77qGcaFJHEbNulhvGhIdAfOg8xlZmgUVFhN7Wa4Z1mZHuVcbZyUlJtLvilTI1uqVB55jmfpBgMN2706l8FRrbji5oO/pykflQS/tlOVjG08WWWw2mpBwLr1fPRspAp9cdisa4FctjgnsZnzoCzHjjlf9chjYHLK2EPSvuj+wgF4+wdJNh8LDWQ1wk1vl1LTuFQp4Ab7XY7iDTZIalQSvDD653O3wL+bnSeFP9XhCx65ucg7FV0ikPk4LM96WHAwJFATXdzOOMzR6HaAIscDfY4EVSYuheOiY5P3+HdOYlAbQqe5VlDMaOp4oKMJJug6zQIDAQAB;",
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            "lookups": 2,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
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        "mta_sts": "",
        "tls_rpt": ""
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        "ptr": "server-13-224-138-28.kix82.r.cloudfront.net",
        "propagation": {
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            "results": [
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                    "provider": "Google",
                    "server": "8.8.8.8",
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                    "time_ms": 616.17
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    "ssl": {
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        "issuer": "Cybertrust Japan Co., Ltd.",
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        "valid_from": "2025-10-14T03:30:23-05:00",
        "valid_to": "2026-11-09T08:59:00-06:00",
        "days_remaining": 92,
        "san": [
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        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
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    "http": {
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        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "server": "AmazonS3",
            "date": "Sun, 09 Aug 2026 08:34:55 GMT",
            "content-length": "61800",
            "location": "https://www.ntv.co.jp/",
            "x-cache": "RefreshHit from cloudfront",
            "via": "1.1 1447e37d54396170c3cea729f272b658.cloudfront.net (CloudFront)",
            "x-amz-cf-pop": "MCI50-P4",
            "alt-svc": "h3=\":443\"; ma=86400",
            "x-amz-cf-id": "FugpvC29A7QlTWVhArZGJWvs3U4Injsb5B5VE_0yt3iXqDUJ35ShJA==",
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            "last-modified": "Mon, 13 Jul 2026 09:58:18 GMT",
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            "referrer-policy": "strict-origin-when-cross-origin",
            "x-content-type-options": "nosniff",
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            "strict-transport-security": true,
            "content-security-policy": false,
            "x-content-type-options": true,
            "x-frame-options": false,
            "referrer-policy": true,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "AmazonS3",
        "powered_by": ""
    },
    "webpage": {
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        "title": "日本テレビ",
        "description": "日本テレビ公式サイト。ドラマ・バラエティ・ニュースなどの番組に加え、Hulu・TVerの動画配信やアナウンサー、映画、イベントといった日テレの最新情報をたっぷりお届けします。",
        "success": true,
        "error": "",
        "status": 200
    },
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            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
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            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
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    "smtp": {
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                "open": false,
                "time_ms": 27.1,
                "banner": "",
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        "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
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    "analysis_time_ms": 117.21
}