{ "ok": true, "domain": "ntnu.edu", "generated_at": "2026-08-09T19:29:45-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 80, "label": "Good", "categories": { "dns": 95, "mail": 45, "security": 73, "network": 85, "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": 10, "lost_points": 0, "detail": "1 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": 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": "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": 0, "lost_points": 25, "detail": "DMARC policy not found." }, { "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": "180 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": 8, "lost_points": 27, "detail": "2 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "PTR: lvs160vip03.it.ntnu.no" }, { "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": 35, "lost_points": 0, "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/1.1 200 200" }, { "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": "ok", "title": "IPv6 (AAAA)", "detail": "1 IPv6 address(es) detected.", "category": "dns", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "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": "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": "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": "error", "title": "DMARC", "detail": "DMARC policy not found.", "category": "mail", "max_points": 25, "earned_points": 0, "lost_points": 25 }, { "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": "180 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: lvs160vip03.it.ntnu.no", "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": "ok", "title": "IPv6 connectivity", "detail": "AAAA availability.", "category": "network", "max_points": 35, "earned_points": 35, "lost_points": 0 }, { "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/1.1 200 200", "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": [ "129.241.160.103" ], "AAAA": [ "2001:700:300:6::103" ], "CNAME": [], "MX": [ "10 mx.ntnu.no." ], "TXT": [ "\"HARICA-DNvOp4t4DYptYzbgYuZ\"", "\"google-site-verification=l7rHBiJUweZWnakhZXteiuAl5VUOHGcuakoPohLsPWI\"", "\"v=spf1 redirect=_spf.ntnu.no\"" ], "NS": [ "ns2.ntnu.no.", "ns1.ntnu.no." ], "SOA": [ "dnsadmin.itea.ntnu.no. hostmaster.ntnu.no. 2026080601 28800 3600 2419200 3600" ], "CAA": [], "DS": [ "39666 13 2 1CB42F7859EC67FDFD5D40B60DB49E5C59DDB7A55600063AA9EF192A 1C56B76B", "39666 13 1 92D900CE836F02C9ED65135443B633AE2F635BAE", "39666 13 4 DB35CB2828E97BDE554A3599D9DCFDD4AB7A29125A742A36006D5A78 D248884F8C4FC37D34D3B266EBCB6443C4D3F123" ], "DNSKEY": [ "257 3 13 7DvCvrgxbEKy4nobiTQmryx8vw6PVarF5uoNuJYuauq7Gx2mByBS3EHH 9RYtICqYcBTw+OlfayuWHwhJH3qWYQ==" ], "RRSIG": [ "NS 13 2 86400 20260820000000 20260730000000 39666 ntnu.edu. Jm2xit3GospaJL01np5B/4gLsmDmZAi23iwS8xIWQ9dhj3UGPQKEOvKq qw8brS3bBXNNlTZrCsSf8PyLRkKHAA==", "MX 13 2 60 20260820000000 20260730000000 39666 ntnu.edu. M+V14A6UwcC9V4mzfmX/IFXEigzVlEOueO6lByS9quo+IXHKFmJVGWAe hJHKoT3NJfVhtchgZ2K72zmSVSabxA==", "DS 13 2 86400 20260815033206 20260808022206 6705 edu. ZuHOr+o8cEvsUPYeoWtJchACCDlW7F7hTTQdHGur8TCXdtlCEQsAcjmt 6ioy8L8h92OhApphirjNT/AhWxLcmw==" ], "NSEC": [ "s1-2021-ntnu._domainkey.ntnu.edu. A NS SOA MX TXT AAAA RRSIG NSEC DNSKEY" ], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "129.241.160.103" ], "ipv6": [ "2001:700:300:6::103" ] }, "mail": { "spf": "v=spf1 redirect=_spf.ntnu.no", "dmarc": "", "dkim_selector": "x", "dkim_host": "", "dkim": "", "spf_analysis": { "valid": true, "lookups": 1, "final": "", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": false, "policy": "" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "lvs160vip03.it.ntnu.no", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "129.241.160.103" ], "time_ms": 346.19 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "129.241.160.103" ], "time_ms": 472.27 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "129.241.160.103" ], "time_ms": 316.08 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "129.241.160.103" ], "time_ms": 693.91 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "129.241.160.103" ], "time_ms": 269.96 } ] } }, "ssl": { "available": true, "issuer": "Hellenic Academic and Research Institutions CA", "subject": "ntnu.edu", "valid_from": "2026-07-22T12:44:03-05:00", "valid_to": "2027-02-06T11:44:02-06:00", "days_remaining": 180, "san": [ "ntnu.edu", "www.ntnu.edu" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_256_GCM_SHA384" }, "http": { "url": "https://www.ntnu.edu/", "status": "HTTP/1.1 200 200", "http_version": "2", "headers": { "date": "Mon, 10 Aug 2026 00:29:43 GMT", "server": "Apache/2.4.52 (Ubuntu)", "location": "https://www.ntnu.edu/", "content-type": "text/html;charset=UTF-8", "x-content-type-options": "nosniff", "x-frame-options": "SAMEORIGIN", "x-xss-protection": "1", "set-cookie": "GUEST_LANGUAGE_ID=en_GB; Max-Age=31536000; Expires=Tue, 10 Aug 2027 00:29:43 GMT; Path=/; Secure; HttpOnly", "expires": "Thu, 01 Jan 1970 00:00:00 GMT", "cache-control": "private, no-cache, no-store, must-revalidate", "pragma": "no-cache", "liferay-portal": "Liferay Digital Experience Platform 7.1.10 GA1 (Judson / Build 7110 / July 2, 2018)", "etag": "\"0\"" }, "security_checks": { "strict-transport-security": false, "content-security-policy": false, "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": "Apache/2.4.52 (Ubuntu)", "powered_by": "" }, "webpage": { "url": "https://www.ntnu.edu/", "title": "Norwegian University of Science and Technology - NTNU", "description": "Norwegian University of Science and Technology. Located in Trondheim, Gjøvik and Ålesund. Specializing in technology and the natural sciences. 40 000 students.", "success": true, "error": "", "status": 206 }, "network": { "129.241.160.103": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "mx.ntnu.no", "ports": [ { "port": 25, "open": false, "time_ms": 133, "banner": "", "error": "Network is unreachable" }, { "port": 465, "open": false, "time_ms": 261.8, "banner": "", "error": "Network is unreachable" }, { "port": 587, "open": false, "time_ms": 265.6, "banner": "", "error": "Network is unreachable" } ] }, "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": 91.47 }