{ "ok": true, "domain": "ncku.edu.tw", "generated_at": "2026-08-09T16:04:41-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 76, "label": "Good", "categories": { "dns": 70, "mail": 70, "security": 77, "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": "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", "max_points": 15, "earned_points": 0, "lost_points": 15, "detail": "Both DS and DNSKEY are required." }, { "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": "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": 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", "max_points": 55, "earned_points": 55, "lost_points": 0, "detail": "172 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": 12, "lost_points": 23, "detail": "3 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "PTR: ncku.edu.tw" }, { "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": "2 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": "1 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": "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": "172 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": "3 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 12, "lost_points": 23 }, { "level": "ok", "title": "PTR reverse DNS", "detail": "PTR: ncku.edu.tw", "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": [ "140.116.229.1" ], "AAAA": [], "CNAME": [], "MX": [ "20 mail.ncku.edu.tw." ], "TXT": [ "\"cisco-ci-domain-verification=3680971a5fbc6160d04fb5065238688d7e6fcdda36f5b462ffd85459edcda66d\"", "\"MS=ms55258625\"", "\"google-site-verification=YahMfXIGI-sAy8n3ApC6MwzoSXM_tcIDjcC7tSp9Tzc\"", "\"Foxit-domain-verification=28ba3e4b92a8fb95ceb3f8a2cafbd9eb\"", "\"google-site-verification=gIdZcybU5pwTOT7-DaOzGjeItpqkgyN9rDsxaNg1TEo\"", "\"ZA=jorjLqipshdTg4R1+EJM+w==\"", "\"v=spf1 ip4:140.116.229.0/24 ip4:140.116.248.16 ip4:140.116.248.17 ip4:140.116.248.18 ip4:140.116.248.21 ip4:140.116.248.22 ip4:140.116.248.23 include:_spf.google.com ~all\"" ], "NS": [ "apple.ncku.edu.tw.", "name.ncku.edu.tw." ], "SOA": [ "apple.ncku.edu.tw. abuse.mail.ncku.edu.tw. 2026080302 21600 1800 1209600 1800" ], "CAA": [], "DS": [], "DNSKEY": [], "RRSIG": [], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "140.116.229.1" ], "ipv6": [] }, "mail": { "spf": "v=spf1 ip4:140.116.229.0/24 ip4:140.116.248.16 ip4:140.116.248.17 ip4:140.116.248.18 ip4:140.116.248.21 ip4:140.116.248.22 ip4:140.116.248.23 include:_spf.google.com ~all", "dmarc": "v=DMARC1; p=none; rua=mailto:mailservice@mail.ncku.edu.tw; fo=1", "dkim_selector": "x", "dkim_host": "", "dkim": "", "spf_analysis": { "valid": true, "lookups": 1, "final": "~all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "none" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "ncku.edu.tw", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "140.116.229.1" ], "time_ms": 34.85 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "140.116.229.1" ], "time_ms": 2150.14 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [], "time_ms": 3027.03 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "140.116.229.1" ], "time_ms": 745.53 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "140.116.229.1" ], "time_ms": 403.54 } ] } }, "ssl": { "available": true, "issuer": "Sectigo Limited", "subject": "*.ncku.edu.tw", "valid_from": "2026-07-13T19:00:00-05:00", "valid_to": "2027-01-28T17:59:59-06:00", "days_remaining": 172, "san": [ "*.ncku.edu.tw", "ncku.edu.tw" ], "protocol": "TLSv1.2", "cipher": "ECDHE-RSA-AES256-GCM-SHA384" }, "http": { "url": "https://ncku.edu.tw/", "status": "HTTP/1.1 200 OK", "http_version": "2", "headers": { "date": "Sun, 09 Aug 2026 21:04:37 GMT", "server": "Apache", "strict-transport-security": "max-age=2592000;includeSubdomains", "last-modified": "Wed, 11 Jun 2025 08:28:46 GMT", "etag": "\"572-637479a0756e7\"", "accept-ranges": "bytes", "content-length": "1394", "vary": "Accept-Encoding,User-Agent", "x-frame-options": "SAMEORIGIN", "content-security-policy": "frame-ancestors 'self'; default-src 'self' ncku.edu.tw im.mailcloud.com.tw; script-src 'self' 'unsafe-eval' 'unsafe-inline' ncku.edu.tw im.mailcloud.com.tw; connect-src 'self' ncku.edu.tw im.mailcloud.com.tw; frame-src ncku.edu.tw im.mailcloud.com.tw; font-src * data:; img-src * data:; style-src * 'unsafe-inline';", "content-type": "text/html" }, "security_checks": { "strict-transport-security": true, "content-security-policy": true, "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": "Apache", "powered_by": "" }, "webpage": { "url": "https://ncku.edu.tw/", "title": "Mail2000郵件系統", "description": "國立成功大學WebMail, National Cheng Kung University WebMail", "success": true, "error": "", "status": 206 }, "network": { "140.116.229.1": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "mail.ncku.edu.tw", "ports": [ { "port": 25, "open": false, "time_ms": 180.9, "banner": "", "error": "Connection refused" }, { "port": 465, "open": false, "time_ms": 179.1, "banner": "", "error": "No connection" }, { "port": 587, "open": false, "time_ms": 175.2, "banner": "220 Mailgate ready", "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": 102.18 }