{
    "ok": true,
    "domain": "postimg.cc",
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        "hit": true,
        "ttl": 0
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        "total": 63,
        "label": "Fair",
        "categories": {
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            "mail": 25,
            "security": 73,
            "network": 20,
            "availability": 100
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        "category_weights": {
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            "mail": 20,
            "security": 25,
            "network": 10,
            "availability": 20
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            {
                "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",
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                "earned_points": 20,
                "lost_points": 0,
                "detail": "3 NS record(s); 2 or more required."
            },
            {
                "category": "dns",
                "title": "SOA record",
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                "earned_points": 10,
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                "detail": "Authoritative zone record."
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            {
                "category": "dns",
                "title": "DNSSEC chain",
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                "earned_points": 0,
                "lost_points": 15,
                "detail": "Both DS and DNSKEY are required."
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            {
                "category": "dns",
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                "earned_points": 0,
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                "detail": "Certificate authority restriction."
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            {
                "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": 0,
                "lost_points": 20,
                "detail": "0 MX record(s)."
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            {
                "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": 0,
                "lost_points": 25,
                "detail": "DMARC policy not found."
            },
            {
                "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",
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                "earned_points": 55,
                "lost_points": 0,
                "detail": "32 day(s) remaining."
            },
            {
                "category": "security",
                "title": "Certificate lifetime",
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                "earned_points": 10,
                "lost_points": 0,
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            },
            {
                "category": "security",
                "title": "HTTP security headers",
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                "earned_points": 8,
                "lost_points": 27,
                "detail": "2 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",
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                "earned_points": 0,
                "lost_points": 35,
                "detail": "AAAA availability."
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            {
                "category": "availability",
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                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0,
                "detail": "At least one address family must resolve."
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            {
                "category": "availability",
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                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0,
                "detail": "HTTP/2 200 "
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            {
                "category": "availability",
                "title": "HTTPS final URL",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "Final URL uses HTTPS."
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        ],
        "methodology": "Each category is normalized to 100. The total is the weighted sum: DNS 25%, Email 20%, Security 25%, Network 10%, Availability 20%.",
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                "level": "error",
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                "earned_points": 0,
                "lost_points": 10
            },
            {
                "level": "ok",
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                "lost_points": 0
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            {
                "level": "ok",
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                "detail": "Authoritative zone record.",
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                "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": "error",
                "title": "MX records",
                "detail": "0 MX record(s).",
                "category": "mail",
                "max_points": 20,
                "earned_points": 0,
                "lost_points": 20
            },
            {
                "level": "ok",
                "title": "SPF",
                "detail": "SPF policy published.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "DMARC",
                "detail": "DMARC policy not found.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 0,
                "lost_points": 25
            },
            {
                "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": "32 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": "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": "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": {
        "records": {
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                "45.43.142.100"
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            "AAAA": [],
            "CNAME": [],
            "MX": [],
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                "\"v=spf1 -all\""
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                "ns1.postimg.cc.",
                "ns2.postimg.cc."
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            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
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            "SSHFP": []
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        "dkim_selector": "x",
        "dkim_host": "",
        "dkim": "",
        "spf_analysis": {
            "valid": true,
            "lookups": 0,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": false,
            "policy": ""
        },
        "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": 68.55
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                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
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                    "time_ms": 19.17
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                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                    "time_ms": 23.45
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                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "45.43.142.100"
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                    "time_ms": 63.65
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "45.43.142.100"
                    ],
                    "time_ms": 40.7
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Let's Encrypt",
        "subject": "postimg.cc",
        "valid_from": "2026-06-12T15:49:56-05:00",
        "valid_to": "2026-09-10T15:49:55-05:00",
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            "s.postimg.cc",
            "s1.postimg.cc",
            "s10.postimg.cc",
            "s11.postimg.cc",
            "s12.postimg.cc",
            "s13.postimg.cc",
            "s14.postimg.cc",
            "s15.postimg.cc",
            "s16.postimg.cc",
            "s17.postimg.cc",
            "s18.postimg.cc",
            "s19.postimg.cc",
            "s2.postimg.cc",
            "s20.postimg.cc",
            "s21.postimg.cc",
            "s22.postimg.cc",
            "s23.postimg.cc",
            "s24.postimg.cc",
            "s25.postimg.cc",
            "s26.postimg.cc",
            "s27.postimg.cc",
            "s28.postimg.cc",
            "s29.postimg.cc",
            "s3.postimg.cc",
            "s30.postimg.cc",
            "s31.postimg.cc",
            "s32.postimg.cc",
            "s33.postimg.cc",
            "s4.postimg.cc",
            "s5.postimg.cc",
            "s6.postimg.cc",
            "s7.postimg.cc",
            "s8.postimg.cc",
            "s9.postimg.cc",
            "www.postimg.cc"
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        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://postimages.org/",
        "status": "HTTP/2 200 ",
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        "headers": {
            "server": "openresty",
            "date": "Sun, 09 Aug 2026 03:15:48 GMT",
            "content-type": "text/html; charset=UTF-8",
            "content-length": "162",
            "location": "https://postimages.org/",
            "strict-transport-security": "max-age=63072000; includeSubDomains; preload",
            "vary": "Accept-Encoding",
            "x-frame-options": "SAMEORIGIN"
        },
        "security_checks": {
            "strict-transport-security": true,
            "content-security-policy": false,
            "x-content-type-options": false,
            "x-frame-options": true,
            "referrer-policy": false,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "openresty",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://postimages.org/",
        "title": "Postimages — free image hosting / image upload",
        "description": "Provides free image uploading and hosting integration for forums. Free picture hosting and photo sharing for websites and blogs.",
        "success": true,
        "error": "",
        "status": 200
    },
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            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
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    "smtp": {
        "host": "postimg.cc",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 24.5,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 98.9,
                "banner": "",
                "error": "No route to host"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 98.8,
                "banner": "",
                "error": "No route to host"
            }
        ]
    },
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        "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
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    "analysis_time_ms": 98.91
}