{ "ok": true, "domain": "rozhlas.cz", "generated_at": "2026-08-10T04:25:50-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 84, "label": "Good", "categories": { "dns": 85, "mail": 90, "security": 81, "network": 50, "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": "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." }, { "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", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "2 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": "125 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": 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: 85-207-4-66.static.bluetone.cz" }, { "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": 40, "lost_points": 0, "detail": "HTTP/1.1 200 OK" }, { "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": [ { "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": "ok", "title": "DNSSEC chain", "detail": "DS and DNSKEY detected.", "category": "dns", "max_points": 15, "earned_points": 15, "lost_points": 0 }, { "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": "2 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": "125 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: 85-207-4-66.static.bluetone.cz", "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.", "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/1.1 200 OK", "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": { "A": [ "85.207.4.66" ], "AAAA": [], "CNAME": [], "MX": [ "20 ddei2.cro.cz.", "10 ddei1.cro.cz." ], "TXT": [ "\"MS=10171CD7318B2FD0D2952E0634A7BAD3C70CFEBE\"", "\"facebook-domain-verification=jal5xvmg1m8fbdf00ly03v17rmv3h4\"", "\"v=spf1 mx include:spf.cro.cz include:sparkpostmail.com -all\"", "\"MS=ms40456600\"", "\"google-site-verification=nyl_ZCszZA_G183G43xtQAQev12TmNS5mxyV0DzWfjQ\"" ], "NS": [ "ns2.cro.cz.", "nsa.ces.net.", "ns1.cro.cz." ], "SOA": [ "ns1.cro.cz. domeny.rozhlas.cz. 2026072504 10800 3600 2419200 3600" ], "CAA": [], "DS": [ "14149 13 2 69A3F6B804C1B82909043FEA2B812B9BCE63B02E733232395EDDF515 B6E941ED" ], "DNSKEY": [ "257 3 13 wvPrq2Wd3GSWMzYDIAB1WowNfcJqnCw/af5oJQ72qXJItgy4EzCEQal2 2MuhGVym2yosJaczwVkrwRU2be4qJg==" ], "RRSIG": [ "DNSKEY 13 2 600 20260901130047 20260802121150 14149 rozhlas.cz. p1dd+jdYVdegPLl7NSgpvZ0QK6FsYebqPN/XCbty0utecj6xAjBr63Rf nLx1Y1GLRoBTNeVgGQ/KDtiHrCETAA==", "SOA 13 2 300 20260909075849 20260810065849 14149 rozhlas.cz. GILDCneExH/TdGGitavzLpLLEU7+1sCCscW1b8QVSk5N9l2DWQF2RknY lZ1xBuJ/25dIgNvuQuzYMWL02C6DVA==", "TXT 13 2 300 20260904103727 20260805101904 14149 rozhlas.cz. OJ/+T3ltm943ESIHxIY6GvyH863k1Y+7nQFqKMRExofzdPe8ux12TdRZ MsQJvnLZJqXIxEW8PJXYxAZzviCkVg==", "MX 13 2 300 20260820001111 20260720231252 14149 rozhlas.cz. lcZtY8FEQlcPOuRzlr4tX/hxgkKupRju2y1A4LVt4tHznrPOJUdYR+cY h+ZnOGg0b6eDMcJovqPNDPVHo8V67g==", "NS 13 2 300 20260823135717 20260724132745 14149 rozhlas.cz. Jub5TbecRDAO/aTuto9zPXynSw4o78ajnd+Wmp8PdR8iOYkrnVFBG6I5 t5qmgWuI/PnrFL+fh94/nrVFyksXQg==", "A 13 2 300 20260907024758 20260808015320 14149 rozhlas.cz. Rgmo16n0GjWzKXuJ+Xi3+zrJ5j1QVFeA3Ywhic0JnJn8uNZCOEmvHPHG TiIyDJr6ZFD4bOgJtT0fk4z4Pc1sCg==", "DS 13 2 3600 20260823054724 20260809041724 5166 cz. XiztLr7jN0FcwHQfNCrNIKHKZ3SF9Cjaz6oW6qhSSVuTcLDNZe0sSqLj f1l/zTTGbGwLdfnnwDMBa9467qjaDQ==", "TYPE65534 13 2 0 20260820112405 20260721111559 14149 rozhlas.cz. uVFRQuBXOiJ30mM/b6wrpQIXOZBqH1oHPmBaERRzmpt5ev/oMRBbPqdn XY+Eys4xr7FZMRtduCxg/YAoF8NFMA==", "NSEC3PARAM 13 2 0 20260907162930 20260808161142 14149 rozhlas.cz. NVsRqOwUkY6O9y8N7ggAuzcaczHoXrEQKzjJtre48nhHc8RsZQwB250u wAZgwjgXEeL6q/Fokiw3jE/rHwoaKA==" ], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "85.207.4.66" ], "ipv6": [] }, "mail": { "spf": "v=spf1 mx include:spf.cro.cz include:sparkpostmail.com -all", "dmarc": "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-reports@rozhlas.cz", "dkim_selector": "mail", "dkim_host": "mail._domainkey.rozhlas.cz", "dkim": "v=DKIM1; h=sha256; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxs4zEqppwsil2jzVeJVtTh7puQ9qE+sV96ssBLO7rmI9W+w4MwiBN9YWr966PAHnkI+Thg6OZbnB9tV5Q1eUqIYcrXWZ8POjF3/hbNjSGmjOom72iet324du1dLB8acn2BritY7pcFNz09s2kY9727COhozCBLTBJxvRFQ5safhCocXlnEf8U4mrywMPTjQDwQeNUVykhsb42o16WAMTnhri+FCj6dEQvnoXH++XpDKfzZEW8o1QlRZGBqD2TCiEi0TgvcY5ZFjisG+tnBYOVVAHJcdbqL3NvFvHEO7ScpcUwnoh8hi/8/EzRMJ/AstzGJSt/RtMoo/JJXgO9J3OpwIDAQAB", "spf_analysis": { "valid": true, "lookups": 3, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "reject" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "85-207-4-66.static.bluetone.cz", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "85.207.4.66" ], "time_ms": 280.82 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "85.207.4.66" ], "time_ms": 281.1 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "85.207.4.66" ], "time_ms": 308.62 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "85.207.4.66" ], "time_ms": 653.17 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "85.207.4.66" ], "time_ms": 449.32 } ] } }, "ssl": { "available": true, "issuer": "DigiCert Inc", "subject": "*.rozhlas.cz", "valid_from": "2026-05-28T19:00:00-05:00", "valid_to": "2026-12-13T17:59:59-06:00", "days_remaining": 125, "san": [ "*.rozhlas.cz", "rozhlas.cz" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_256_GCM_SHA384" }, "http": { "url": "https://portal.rozhlas.cz/", "status": "HTTP/1.1 200 OK", "http_version": "2", "headers": { "server": "nginx", "date": "Mon, 10 Aug 2026 09:26:26 GMT", "content-type": "text/html; charset=utf-8", "content-length": "162", "connection": "keep-alive", "location": "https://portal.rozhlas.cz", "access-control-allow-methods": "PUT, GET, POST, DELETE, OPTIONS", "access-control-allow-origin": "*", "vary": "Accept-Encoding", "expires": "Sun, 19 Nov 1978 05:00:00 GMT", "cache-control": "no-cache, must-revalidate", "content-language": "cs", "x-frame-options": "SAMEORIGIN", "x-content-type-options": "nosniff", "x-ua-compatible": "IE=edge,chrome=1", "link": ",,,,,,; rel=\"canonical\",; rel=\"shortlink\"", "content-security-policy": "upgrade-insecure-requests", "x-cache-status": "HIT", "strict-transport-security": "max-age=31536000; includeSubDomains" }, "security_checks": { "strict-transport-security": true, "content-security-policy": true, "x-content-type-options": true, "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": "nginx", "powered_by": "" }, "webpage": { "url": "https://portal.rozhlas.cz/", "title": "Portál Českého rozhlasu", "description": "Nejrychlejší zpravodajství a vysílání online. Stanice, program, podcasty, nové rozhovory, rozhlasové hry a audioknihy.", "success": true, "error": "", "status": 200 }, "network": { "85.207.4.66": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "ddei2.cro.cz", "ports": [ { "port": 25, "open": false, "time_ms": 143, "banner": "", "error": "Connection refused" }, { "port": 465, "open": false, "time_ms": 4172.8, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4019.3, "banner": "", "error": "Connection timed out" } ] }, "visitor": { "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 }, "analysis_time_ms": 95.75 }