{
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    "domain": "blesk.cz",
    "generated_at": "2026-08-11T02:34:41-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
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        "label": "Good",
        "categories": {
            "dns": 70,
            "mail": 65,
            "security": 77,
            "network": 50,
            "availability": 100
        },
        "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": "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",
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                "earned_points": 0,
                "lost_points": 15,
                "detail": "Both DS and DNSKEY are required."
            },
            {
                "category": "dns",
                "title": "CAA policy",
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                "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": "7 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": 0,
                "lost_points": 25,
                "detail": "DMARC policy not found."
            },
            {
                "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": "42 day(s) remaining."
            },
            {
                "category": "security",
                "title": "Certificate lifetime",
                "max_points": 10,
                "earned_points": 10,
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            },
            {
                "category": "security",
                "title": "HTTP security headers",
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                "lost_points": 23,
                "detail": "3 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
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                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: 91-235-52-165.rev.rintech.sk"
            },
            {
                "category": "network",
                "title": "IPv4 diversity",
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                "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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            },
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                "category": "availability",
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                "lost_points": 0,
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            },
            {
                "category": "availability",
                "title": "HTTPS final URL",
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                "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": "ok",
                "title": "IPv4 (A)",
                "detail": "1 IPv4 address(es) detected.",
                "category": "dns",
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                "earned_points": 30,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "IPv6 (AAAA)",
                "detail": "0 IPv6 address(es) detected.",
                "category": "dns",
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                "earned_points": 0,
                "lost_points": 10
            },
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                "level": "ok",
                "title": "Name server redundancy",
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                "category": "dns",
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                "lost_points": 0
            },
            {
                "level": "ok",
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                "detail": "Authoritative zone record.",
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                "level": "error",
                "title": "DNSSEC chain",
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                "category": "dns",
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                "earned_points": 0,
                "lost_points": 15
            },
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                "level": "error",
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                "detail": "Certificate authority restriction.",
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                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
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                "level": "ok",
                "title": "DNS propagation",
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                "category": "dns",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "MX records",
                "detail": "7 MX record(s).",
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                "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": "error",
                "title": "DMARC",
                "detail": "DMARC policy not found.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 0,
                "lost_points": 25
            },
            {
                "level": "ok",
                "title": "DKIM",
                "detail": "A DKIM selector was verified.",
                "category": "mail",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            },
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                "level": "error",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
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                "level": "error",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
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                "earned_points": 0,
                "lost_points": 5
            },
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                "level": "ok",
                "title": "Valid TLS certificate",
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                "category": "security",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "Certificate lifetime",
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                "category": "security",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "level": "warning",
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                "category": "security",
                "max_points": 35,
                "earned_points": 12,
                "lost_points": 23
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
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                "category": "network",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0
            },
            {
                "level": "warning",
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                "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",
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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.",
                "category": "availability",
                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "HTTP response",
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                "earned_points": 40,
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            },
            {
                "level": "ok",
                "title": "HTTPS final URL",
                "detail": "Final URL uses HTTPS.",
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                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            }
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            "AAAA": [],
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                "30 aspmx2.googlemail.com.",
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                "20 alt1.aspmx.l.google.com.",
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                "\"v=spf1 include:_spf.google.com mx ip4:207.126.144.0/20 ip4:91.235.52.159 ip4:91.235.52.160 ~all\"",
                "\"google-site-verification=Fh3MVqtpo01eXzT6zbRgW9myeLnSmOf6JMnFoIt-bwc\""
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            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
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        "ipv6": []
    },
    "mail": {
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        "dkim_selector": "google",
        "dkim_host": "google._domainkey.blesk.cz",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAgAFFEXZ/j8+7ZZvzOWqxkmdV4Etgce/rxgM78Yw/RHeZAGpKeUPj/c6IuWM30INDRq+8bctq8rrivUIfVyUoWiVQI4RA+JDf5ZDuCE4fEtOaYygR0QBY9cXVJRQAKbgvP2jW7TKbUKExaWrzb2YhaQ/pH0YO3T5ahET9iXQFv7rCKE7nBu9+t/5zIRRQefKIQbp69G0tGHJoi2PgUZuBy7NodNEDE8GfdjFAAlLbJv/wzgWJC0bc2bOpSiElVTWNLWU8E3JeXqqGvJglYv1BhbiUswKPnGeoY0mvoW/i1j7+QSNOZNSjFDTgEbLSeRopmWWdee4SzI3/VjTTN8V6+QIDAQAB",
        "spf_analysis": {
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            "lookups": 2,
            "final": "~all",
            "message": "Within the estimated limit"
        },
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            "policy": ""
        },
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                    "provider": "Google",
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                    "time_ms": 96.68
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        "issuer": "Let's Encrypt",
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        "valid_to": "2026-09-22T07:16:59-05:00",
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        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
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        "headers": {
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            "content-type": "text/html; charset=UTF-8",
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            "cache-control": "no-store, no-cache, must-revalidate",
            "pragma": "no-cache",
            "location": "https://www.blesk.cz/",
            "x-served-by": "cnc-php-web-production-07",
            "x-xss-protection": "1; mode=block",
            "x-content-type-options": "nosniff",
            "referrer-policy": "no-referrer-when-downgrade"
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            "content-security-policy": true,
            "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": "",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.blesk.cz/",
        "title": "Blesk.cz - zprávy, celebrity, sport, zábava",
        "description": "Blesk je váš zpravodajský portál, který vám přináší nejen vše o celebritách, ale také události, zprávy ze sportu, rady nebo předpověď počasí Začtěte se do článků na Blesk.cz a užijte si svou porci zábavy i zpráv.",
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        "error": "",
        "status": 200
    },
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            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
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        "country_code": "",
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        "city": "",
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        "longitude": null,
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        "organization": "",
        "asn": "",
        "timezone": "",
        "browser": "Other",
        "os": "Other",
        "language": "",
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        "cloudflare": false
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}