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    "ok": true,
    "domain": "irb.hr",
    "generated_at": "2026-08-12T12:06:08-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 81,
        "label": "Good",
        "categories": {
            "dns": 70,
            "mail": 90,
            "security": 81,
            "network": 50,
            "availability": 100
        },
        "category_weights": {
            "dns": 25,
            "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",
                "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",
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                "earned_points": 0,
                "lost_points": 15,
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            },
            {
                "category": "dns",
                "title": "CAA policy",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "Certificate authority restriction."
            },
            {
                "category": "dns",
                "title": "DNS propagation",
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                "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": "45 day(s) remaining."
            },
            {
                "category": "security",
                "title": "Certificate lifetime",
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                "earned_points": 10,
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            },
            {
                "category": "security",
                "title": "HTTP security headers",
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                "earned_points": 16,
                "lost_points": 19,
                "detail": "4 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: five.netgencloud.com"
            },
            {
                "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",
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                "earned_points": 40,
                "lost_points": 0,
                "detail": "At least one address family must resolve."
            },
            {
                "category": "availability",
                "title": "HTTP response",
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                "earned_points": 40,
                "lost_points": 0,
                "detail": "HTTP/2 200 "
            },
            {
                "category": "availability",
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                "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%.",
        "diagnostics": [
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                "level": "ok",
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                "detail": "1 IPv4 address(es) detected.",
                "category": "dns",
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            {
                "level": "error",
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                "category": "dns",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10
            },
            {
                "level": "ok",
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                "category": "dns",
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            },
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                "level": "ok",
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                "lost_points": 0
            },
            {
                "level": "error",
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                "category": "dns",
                "max_points": 15,
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                "lost_points": 15
            },
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                "level": "error",
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                "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).",
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                "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": "45 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": "4 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 16,
                "lost_points": 19
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: five.netgencloud.com",
                "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.",
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                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "level": "ok",
                "title": "DNS resolution",
                "detail": "At least one address family must resolve.",
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                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "HTTP response",
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                "earned_points": 40,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "HTTPS final URL",
                "detail": "Final URL uses HTTPS.",
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                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            }
        ]
    },
    "dns": {
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            "AAAA": [],
            "CNAME": [],
            "MX": [
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            "TXT": [
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            "NS": [
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                "atlas.irb.hr.",
                "storm.irb.hr."
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            "SOA": [
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            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
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        "ipv6": []
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    "mail": {
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        "dkim_host": "default._domainkey.irb.hr",
        "dkim": "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDHvSxI+p2UPMr/05cC+Nx8BJL2lr3Jqb0NlkU0IIOXzp2sWGBGhfTZCDbJ7OeNinsc1SugoAL5zZQvKHxgOPt+ZlodNWLPvZr6L778FU2JmNqPn2bCJO9tW51l9YQectWyngv1fOBiDSkBYaZb7UflVLP/99S60tpK/bUAIqm51QIDAQAB",
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            "valid": true,
            "lookups": 1,
            "final": "-all",
            "message": "Within the estimated limit"
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        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
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    "advanced": {
        "ptr": "five.netgencloud.com",
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                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
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                    ],
                    "time_ms": 165.1
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
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                    ],
                    "time_ms": 158.03
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "172.104.136.213"
                    ],
                    "time_ms": 205.73
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
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                    ],
                    "time_ms": 502.32
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
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                    ],
                    "time_ms": 196.41
                }
            ]
        }
    },
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        "issuer": "Let's Encrypt",
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        "valid_to": "2026-09-27T10:55:49-05:00",
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        "cipher": "TLS_AES_256_GCM_SHA384"
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        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
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            "location": "https://www.irb.hr/",
            "content-security-policy": "object-src *;script-src * 'unsafe-inline' 'unsafe-eval' data: blob:;worker-src blob:",
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            "server": "nginx",
            "content-type": "text/html; charset=UTF-8",
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            "x-varnish": "656037516 635764567",
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            "cache-control": "public, s-maxage=600, stale-while-revalidate=300, stale-if-error=300",
            "accept-ranges": "bytes",
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            "content-security-policy": true,
            "x-content-type-options": false,
            "x-frame-options": true,
            "referrer-policy": false,
            "permissions-policy": true,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
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        "title": "Početna - Institut Ruđer Bošković",
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        "error": "",
        "status": 200
    },
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            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
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                "port": 25,
                "open": false,
                "time_ms": 123.7,
                "banner": "",
                "error": "Connection refused"
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                "open": false,
                "time_ms": 4146.7,
                "banner": "",
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                "open": false,
                "time_ms": 123,
                "banner": "220 mail.irb.hr Microsoft ESMTP MAIL Service ready at Wed, 12 Aug 2026 19:06:13 +0200",
                "error": "No connection"
            }
        ]
    },
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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)",
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        "cloudflare": false
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}