{ "ok": true, "domain": "lichess.org", "generated_at": "2026-08-09T08:42:49-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 89, "label": "Good", "categories": { "dns": 100, "mail": 80, "security": 77, "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": 5, "lost_points": 0, "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": "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": 0, "lost_points": 20, "detail": "No tested DKIM selector responded." }, { "category": "mail", "title": "MTA-STS", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "Mail transport policy." }, { "category": "mail", "title": "TLS-RPT", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "TLS reporting policy." }, { "category": "security", "title": "Valid TLS certificate", "max_points": 55, "earned_points": 55, "lost_points": 0, "detail": "82 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: lichess.org" }, { "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/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": "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": "ok", "title": "CAA policy", "detail": "Certificate authority restriction.", "category": "dns", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "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": "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": "error", "title": "DKIM", "detail": "No tested DKIM selector responded.", "category": "mail", "max_points": 20, "earned_points": 0, "lost_points": 20 }, { "level": "ok", "title": "MTA-STS", "detail": "Mail transport policy.", "category": "mail", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "TLS-RPT", "detail": "TLS reporting policy.", "category": "mail", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "Valid TLS certificate", "detail": "82 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: lichess.org", "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/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": [ "37.187.205.99" ], "AAAA": [ "2001:41d0:307:b200::" ], "CNAME": [], "MX": [ "10 alt3.aspmx.l.google.com.", "1 aspmx.l.google.com.", "5 alt1.aspmx.l.google.com.", "5 alt2.aspmx.l.google.com.", "10 alt4.aspmx.l.google.com." ], "TXT": [ "\"google-site-verification=nTK9KGLK0Uk6ScCHMRZKQsh7UEFGc3f6NY1nQ2PuHHA\"", "\"google-site-verification=iHavQOc6X8aYmnHhfovb-1hseQ3bxT79YJiwhDzhoTo\"", "\"v=spf1 include:_spf.google.com include:_spf.tem.scaleway.com -all\"", "\"google-site-verification=fZ08Imok7kcLaGcJg7BKQExO6vXGgSgsJUsW6JalUCo\"", "\"google-site-verification=lcne9sTo24rMZhlrGEXB3TtkTnnpZqH_hNo20DezQEc\"" ], "NS": [ "dimitris.ns.cloudflare.com.", "serenity.ns.cloudflare.com." ], "SOA": [ "dimitris.ns.cloudflare.com. dns.cloudflare.com. 2411613315 10000 2400 604800 1800" ], "CAA": [ "0 issue \"pki.goog; cansignhttpexchanges=yes\"", "0 issue \"comodoca.com\"", "0 issuewild \"digicert.com; cansignhttpexchanges=yes\"", "0 issuewild \"letsencrypt.org\"", "0 issue \"digicert.com; cansignhttpexchanges=yes\"", "0 issuewild \"pki.goog; cansignhttpexchanges=yes\"", "0 issue \"ssl.com\"", "0 issue \"letsencrypt.org\"", "0 issuewild \"comodoca.com\"", "0 issuewild \"ssl.com\"" ], "DS": [ "2371 13 2 80E3C5B09C3C1C1B70B5707CF8230936424EA0D3AC056ED30E9516E6 334FB814" ], "DNSKEY": [ "256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==", "257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==" ], "RRSIG": [ "DNSKEY 13 2 3600 20260914201409 20260715201409 2371 lichess.org. kUYIm6ATLC+84FFJCN9jBPpvrv81NZ2/2ecit0z6cSjZC/biY7y2Ddq1 sOF376+oHMVmJuSoFAGf8sh5lb7w4Q==", "SOA 13 2 1800 20260810144237 20260808124237 34505 lichess.org. dtbd14Tuw5mw2/witi7KNtLEoE2yG92f5mJanT8BGPpsRdiissrVqyPj 7LHvo7NLQDODbhqNKsCAFI2fk79FXA==", "NS 13 2 86400 20260810144237 20260808124237 34505 lichess.org. JbUGIAttEPA3afeoFIZjGrpKm703PfdNet273ulfkWvpHfEXmgvDwZH+ pWZDSFgafCayCwcLqginSgQh5QYXpg==", "MX 13 2 3600 20260810144237 20260808124237 34505 lichess.org. R7pyzxdoGFYslAf2N0QBl0RzwPyUBmcql5nH2blg02UnTNVJLhytN0nr ub2PyYicof1Q1juX/ISK4ZOeAn6maw==", "DS 8 2 3600 20260822152352 20260801142352 44925 org. KWk0qoctDwX2RbpnEGLiiWR8cOQDtAxWBp0uiemfTGtoNKIFjeJ12npk 4HdEdoeoWQp6xgdZjUAArmgXVWo34EZF+FDfS+bd2Zrt0lUZo7DiQmi3 OkEG7oMjbfNRnmXffgELNBVhLZL0WCiH2O6s86RY2zwvj/Di99m+/jVd jLs=" ], "NSEC": [ "\\000.lichess.org. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI CAA" ], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "37.187.205.99" ], "ipv6": [ "2001:41d0:307:b200::" ] }, "mail": { "spf": "v=spf1 include:_spf.google.com include:_spf.tem.scaleway.com -all", "dmarc": "v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s", "dkim_selector": "x", "dkim_host": "", "dkim": "", "spf_analysis": { "valid": true, "lookups": 2, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "reject" }, "bimi": "", "mta_sts": "v=STSv1;id=1778941971;", "tls_rpt": "v=TLSRPTv1;rua=mailto:smtp-tls-reports@lichess.org;" }, "advanced": { "ptr": "lichess.org", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "37.187.205.99" ], "time_ms": 47.54 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "37.187.205.99" ], "time_ms": 19.05 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "37.187.205.99" ], "time_ms": 23.74 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "37.187.205.99" ], "time_ms": 25.06 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "37.187.205.99" ], "time_ms": 43.47 } ] } }, "ssl": { "available": true, "issuer": "Let's Encrypt", "subject": "mta-sts.lichess.org", "valid_from": "2026-08-02T02:48:40-05:00", "valid_to": "2026-10-31T02:48:39-05:00", "days_remaining": 82, "san": [ "af.lichess.org", "ar.lichess.org", "as.lichess.org", "az.lichess.org", "be.lichess.org", "bg.lichess.org", "bn.lichess.org", "bs.lichess.org", "ca.lichess.org", "cs.lichess.org", "cv.lichess.org", "cy.lichess.org", "da.lichess.org", "de.lichess.org", "el.lichess.org", "en.lichess.org", "eo.lichess.org", "es.lichess.org", "et.lichess.org", "eu.lichess.org", "fa.lichess.org", "fi.lichess.org", "fo.lichess.org", "fp.lichess.org", "fr.lichess.org", "fy.lichess.org", "ga.lichess.org", "gd.lichess.org", "gl.lichess.org", "gu.lichess.org", "he.lichess.org", "hi.lichess.org", "hr.lichess.org", "hu.lichess.org", "hy.lichess.org", "ia.lichess.org", "id.lichess.org", "io.lichess.org", "is.lichess.org", "it.lichess.org", "ja.lichess.org", "jb.lichess.org", "jv.lichess.org", "ka.lichess.org", "kb.lichess.org", "kk.lichess.org", "kn.lichess.org", "ko.lichess.org", "ky.lichess.org", "la.lichess.org", "le.lichess.org", "lichess.org", "lt.lichess.org", "lv.lichess.org", "mg.lichess.org", "mk.lichess.org", "ml.lichess.org", "mn.lichess.org", "mr.lichess.org", "mta-sts.lichess.org", "nb.lichess.org", "nl.lichess.org", "nn.lichess.org", "oauth.lichess.org", "pi.lichess.org", "pl.lichess.org", "ps.lichess.org", "pt.lichess.org", "ro.lichess.org", "ru.lichess.org", "sa.lichess.org", "sk.lichess.org", "sl.lichess.org", "sq.lichess.org", "sr.lichess.org", "sv.lichess.org", "sw.lichess.org", "ta.lichess.org", "tc.lichess.org", "tg.lichess.org", "th.lichess.org", "tl.lichess.org", "tp.lichess.org", "tr.lichess.org", "uk.lichess.org", "ur.lichess.org", "vi.lichess.org", "www.lichess.org", "yo.lichess.org", "zh.lichess.org", "zu.lichess.org" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_256_GCM_SHA384" }, "http": { "url": "https://lichess.org/", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "server": "nginx", "date": "Sun, 09 Aug 2026 13:42:40 GMT", "content-type": "text/html; charset=utf-8", "content-length": "34144", "link": "; rel=\"canonical\"", "vary": "Accept", "expires": "0", "set-cookie": "lila2=35a88d38c5cb9dfd73d62ffcb2c5f78c7626c1f1-sid=o01q2w4NxmIiRGDP9LdKBj; Max-Age=315360000; Expires=Wed, 06 Aug 2036 13:42:40 GMT; SameSite=Lax; Path=/; Domain=lichess.org; Secure; HTTPOnly", "cache-control": "no-cache, no-store, must-revalidate", "permissions-policy": "interest-cohort=()", "strict-transport-security": "max-age=63072000; includeSubDomains; preload", "x-frame-options": "DENY" }, "security_checks": { "strict-transport-security": true, "content-security-policy": false, "x-content-type-options": false, "x-frame-options": true, "referrer-policy": false, "permissions-policy": true, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "nginx", "powered_by": "" }, "webpage": { "url": "https://lichess.org/", "title": "lichess.org • Free Online Chess", "description": "Free online chess server. Play chess in a clean interface. No registration, no ads, no plugin required. Play chess with the computer, friends or random opponents.", "success": true, "error": "", "status": 200 }, "network": { "37.187.205.99": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "alt3.aspmx.l.google.com", "ports": [ { "port": 25, "open": false, "time_ms": 0.7, "banner": "", "error": "Network is unreachable" }, { "port": 465, "open": false, "time_ms": 4019.2, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4007, "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": 87.89 }