{ "ok": true, "domain": "kahoot.it", "generated_at": "2026-08-09T17:20:52-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 78, "label": "Good", "categories": { "dns": 60, "mail": 90, "security": 73, "network": 65, "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": "4 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": "4 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": 0, "lost_points": 10, "detail": "Agreement between public resolvers." }, { "category": "mail", "title": "MX records", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "5 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": "60 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: server-3-166-96-13.mci50.r.cloudfront.net" }, { "category": "network", "title": "IPv4 diversity", "max_points": 35, "earned_points": 35, "lost_points": 0, "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/2 200 " }, { "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": "4 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": "error", "title": "DNS propagation", "detail": "Agreement between public resolvers.", "category": "dns", "max_points": 10, "earned_points": 0, "lost_points": 10 }, { "level": "ok", "title": "MX records", "detail": "5 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": "60 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: server-3-166-96-13.mci50.r.cloudfront.net", "category": "network", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "ok", "title": "IPv4 diversity", "detail": "Two or more IPv4 addresses receive full points.", "category": "network", "max_points": 35, "earned_points": 35, "lost_points": 0 }, { "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/2 200 ", "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": [ "3.166.96.13", "3.166.96.39", "3.166.96.96", "3.166.96.97" ], "AAAA": [], "CNAME": [], "MX": [ "20 alt2.aspmx.l.google.com.", "20 alt1.aspmx.l.google.com.", "10 aspmx.l.google.com.", "30 aspmx2.googlemail.com.", "30 aspmx3.googlemail.com." ], "TXT": [ "\"google-site-verification=vVBXGvkC0UK_TATSJXRegkv3MBLybRoXjRGM_nLliJM\"", "\"google-site-verification=U4iTPUbge8vnh61ejqex5lLLIuo8ypzKQ6wCRQuBvRE\"", "\"_globalsign-domain-verification=2wRqY6IrIINLY7B8Qcp-qur9HsiRTO04g4gwsMmFy3\"", "\"v=spf1 include:_spf.google.com include:smtp1.uservoice.com -all\"", "\"google-site-verification=L6YwgedwHC8U4D-dCROq9B1F7Qb-u3f20z6f19MX7N8\"" ], "NS": [ "ns-729.awsdns-27.net.", "ns-1494.awsdns-58.org.", "ns-1622.awsdns-10.co.uk.", "ns-334.awsdns-41.com." ], "SOA": [ "ns-334.awsdns-41.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 60" ], "CAA": [], "DS": [], "DNSKEY": [], "RRSIG": [], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "3.166.96.13", "3.166.96.39", "3.166.96.96", "3.166.96.97" ], "ipv6": [] }, "mail": { "spf": "v=spf1 include:_spf.google.com include:smtp1.uservoice.com -all", "dmarc": "v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@kahoot.it", "dkim_selector": "google", "dkim_host": "google._domainkey.kahoot.it", "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqITnGH6GtZWATQ8VaRSyROyjuFccb6YMdtISHzm0W1IcC0nppDC+9mxUEBaJopafCBvABxTYVOVBLZEc5xMWa+VEzViz35HXlJplXOhV8weWmp7ZTng3xYpXLEfqAo9od0s16cnJx/0kl1vRuTq4OY/dABG60D1Ahq69zF5/hFsm1fxBH6ZS/0cfLhJ9nF7zTUNKouI1zdbxvqjdeokqfaJlTjTQbLEozvxZRE8JTPnZ5VXYMtWFCrMuGEkxY3fMADwBqFI6UUGtjS0kFL8Q97vXepC9LhZ95KBe2/LEdqdcMtkoPqsLBFDqjqdLw1SsedxPI8EsQNhagauW51agmQIDAQAB", "spf_analysis": { "valid": true, "lookups": 2, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "quarantine" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "server-3-166-96-13.mci50.r.cloudfront.net", "propagation": { "consistent": false, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "3.170.185.128", "3.170.185.26", "3.170.185.63", "3.170.185.85" ], "time_ms": 73.37 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "3.170.185.128", "3.170.185.26", "3.170.185.63", "3.170.185.85" ], "time_ms": 46.24 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "3.166.96.13", "3.166.96.39", "3.166.96.96", "3.166.96.97" ], "time_ms": 63.42 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "3.170.185.128", "3.170.185.26", "3.170.185.63", "3.170.185.85" ], "time_ms": 100.75 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "3.166.96.13", "3.166.96.39", "3.166.96.96", "3.166.96.97" ], "time_ms": 173.37 } ] } }, "ssl": { "available": true, "issuer": "Amazon", "subject": "*.kahoot.it", "valid_from": "2025-09-08T19:00:00-05:00", "valid_to": "2026-10-08T18:59:59-05:00", "days_remaining": 60, "san": [ "*.kahoot.it", "kahoot.it" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_128_GCM_SHA256" }, "http": { "url": "https://kahoot.it/", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "content-type": "text/html", "content-length": "5326", "accept-ranges": "bytes", "server": "openresty", "last-modified": "Wed, 05 Aug 2026 14:54:37 GMT", "strict-transport-security": "max-age=31536000; includeSubDomains; preload", "x-content-type-options": "nosniff", "x-xss-protection": "1; mode=block", "date": "Sun, 09 Aug 2026 22:20:33 GMT", "cache-control": "no-store, max-age=0", "etag": "\"6a734ead-14ce\"", "vary": "Accept-Encoding", "x-cache": "Hit from cloudfront", "via": "1.1 677da8877c7bdf46bc7577d17b7b5a00.cloudfront.net (CloudFront)", "x-amz-cf-pop": "MCI50-P3", "x-amz-cf-id": "6ku-Mm8VPHnoFeKGTL1JvYgY1rpWw9_gabZzsia5NImEFt1t2O4MBA==", "age": "11" }, "security_checks": { "strict-transport-security": true, "content-security-policy": false, "x-content-type-options": true, "x-frame-options": false, "referrer-policy": false, "permissions-policy": false, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "openresty", "powered_by": "" }, "webpage": { "url": "https://kahoot.it/", "title": "Kahoot!", "description": "Join a game of kahoot – answer questions in an interactive quiz, compete with others, and experience awesome learning.", "success": true, "error": "", "status": 200 }, "network": { "3.166.96.13": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "3.166.96.39": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "3.166.96.96": { "success": true, "country": "United States", "country_code": "US", "region": "Missouri", "city": "Kansas City", "latitude": 39.0997285, "longitude": -94.5785681, "asn": 16509, "organization": "Amazon Technologies Inc.", "isp": "Amazon.com, Inc.", "timezone": "America/Chicago" }, "3.166.96.97": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "alt2.aspmx.l.google.com", "ports": [ { "port": 25, "open": false, "time_ms": 1.2, "banner": "", "error": "Network is unreachable" }, { "port": 465, "open": false, "time_ms": 4019.3, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4005.2, "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": 80.43 }