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The total is the weighted sum: DNS 25%, Email 20%, Security 25%, Network 10%, Availability 20%.", "diagnostics": [ { "level": "ok", "title": "IPv4 (A)", "detail": "2 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": "4 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": "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": "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": "46 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": "ok", "title": "PTR reverse DNS", "detail": "PTR: ec2-54-246-39-158.eu-west-1.compute.amazonaws.com", "category": "network", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "ok", "title": "IPv4 diversity", "detail": "Two or 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"52.208.213.236" ], "ipv6": [] }, "mail": { "spf": "v=spf1 ip4:52.16.14.52 ip4:195.140.184.0/22 ip4:91.192.40.0/22 include:amazonses.com include:_spf.google.com include:eu._netblocks.mimecast.com include:mail.channel4.com include:gitlab.channel4.com include:em7815.channel4.com ~all", "dmarc": "v=DMARC1; p=reject; rua=mailto:2e295de150b4712@rep.dmarcanalyzer.com; ruf=mailto:2e295de150b4712@for.dmarcanalyzer.com; fo=1;", "dkim_selector": "s1", "dkim_host": "s1._domainkey.channel4.com", "dkim": "k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxxnwZc4IneYo8cRg6PRR6pl4wxaqDxBVPRtJIMhHv29VTpmPUIMHKmwlShalUouq4ygcxNt90z3hfkUdmSfFm6sE/sdXCEdm1ufTnDcTt7RPOK16unAmdv6ruqdjqmd6ePYRlnkJtP+mVQar66FQuVFDAKsRlhhvyisd0nYt5C2IRmB14SlDZ2ebFvPEnjV12fgQcBT3Fo0L35CU1YoZQqDr0JONfYZHVMjCCQKZg4IUTTeOyriEE+gd2eukNIjLX8KQkZeNKuBv3ongV8Aac2Oq6+40VTNxre9dRaRg9Bld75lYdWiX6YqW8Afs9Tl4C6BhSThfsYuFoDOuKwMQIwIDAQAB", "spf_analysis": { "valid": true, "lookups": 6, "final": "~all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "reject" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "ec2-54-246-39-158.eu-west-1.compute.amazonaws.com", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "52.208.213.236", "54.246.39.158" ], "time_ms": 74.71 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "52.208.213.236", "54.246.39.158" ], "time_ms": 42.78 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "52.208.213.236", "54.246.39.158" ], "time_ms": 113.35 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "52.208.213.236", "54.246.39.158" ], "time_ms": 201.09 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "52.208.213.236", "54.246.39.158" ], "time_ms": 49.57 } ] } }, "ssl": { "available": true, "issuer": "Sectigo Limited", "subject": "www.channel4.com", "valid_from": "2025-09-23T19:00:00-05:00", "valid_to": 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"https://www.channel4.com/", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "date": "Sun, 09 Aug 2026 02:57:58 GMT", "content-type": "text/html; charset=utf-8", "content-length": "10376", "location": "https://www.channel4.com/", "server": "nginx", "x-dns-prefetch-control": "off", "x-frame-options": "SAMEORIGIN", "x-download-options": "noopen", "x-xss-protection": "1; mode=block", "cache-control": "no-cache, no-store, must-revalidate", "etag": "W/\"2888-HRz3CcUxyTBxZWPrxgVeMuuVL7w\"", "vary": "Accept-Encoding", "strict-transport-security": "max-age=31536000", "set-cookie": 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"https://www.channel4.com/", "title": "Channel 4 | Stream & Watch Live TV", "description": "Watch your favourite shows online, from Channel 4, E4 and Walter Presents", "success": true, "error": "", "status": 206 }, "network": { "54.246.39.158": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "52.208.213.236": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "eu-smtp-inbound-2.mimecast.com", "ports": [ { "port": 25, "open": false, "time_ms": 30.5, "banner": "", "error": "Connection refused" }, { "port": 465, "open": false, "time_ms": 4001.5, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 95.4, "banner": "220 eu-smtp-inbound-1.mimecast.com ESMTP; Sun, 09 Aug 2026 03:58:03 +0100", "error": "No connection" } ] }, "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": 78.87 }