{ "ok": true, "domain": "biolinky.co", "generated_at": "2026-08-11T04:18:56-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 76, "label": "Good", "categories": { "dns": 75, "mail": 90, "security": 69, "network": 20, "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": "3 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": 0, "lost_points": 10, "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": 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": "40 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": 4, "lost_points": 31, "detail": "1 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 0, "lost_points": 30, "detail": "PTR not detected." }, { "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/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": "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": "3 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": "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": "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": "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": "40 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": "1 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 4, "lost_points": 31 }, { "level": "error", "title": "PTR reverse DNS", "detail": "PTR not detected.", "category": "network", "max_points": 30, "earned_points": 0, "lost_points": 30 }, { "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/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": [ "76.76.21.21" ], "AAAA": [], "CNAME": [], "MX": [ "1 SMTP.GOOGLE.COM." ], "TXT": [ "\"admitad-verification: 5032812c6b\"", "\"admitad-verification: 88259cfd6b\"", 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wbDpNJDGDymPee4XSvQJBfVGB9RA57yvXf+2tE0Kx6RFeivTMRhuCA8J WIJtCICEKrEj5K6M9sEe/YPmYEtHWQ==", "A 13 2 300 20260820000000 20260730000000 36278 biolinky.co. +eb103OT/uHzECPYr3iV6oP3FLbVBhk7Adj+HLqsFu8J3YoUotlviT7f TYNbncmjbW/Bc++DThrRjTVjYaeC4w==", "DS 8 2 3600 20260822124149 20260723111149 16855 co. S36vEPKUs/QCCpePbdmhriacsnSeEXj5gyCWs6R2YjJwaEo1vZRDUaGw qDydHyDNhsJY9uqEnG07OvCoy9P+Z59RM1aQnetnTctGi5zA8hSA1XqJ 7qEkxk6x5YD3bARvUjn4FZZU/I6rSAEMgM6yTAoInqVtgh2bXYeZ8gr3 XvRjHM+WuipkqbQvYCPwAkIOEiiW00mI9oz90a6ylkfiMQ==", "NS 13 2 86400 20260820000000 20260730000000 36278 biolinky.co. VhBD8GkawZ+qJTvOx2sCLDsb9XTVM5+cNr6F6eilXChRtukkq2Meeb9q tX0CA2T8wviVks8Zl9KmO+0CwtHhiQ==" ], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "76.76.21.21" ], "ipv6": [] }, "mail": { "spf": "v=spf1 include:servers.mcsv.net ?all", "dmarc": "v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com", "dkim_selector": "mail", "dkim_host": "mail._domainkey.biolinky.co", "dkim": "k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z+FApQ6ra2VsXfbJP3HE6wAO0YTVEJt1TmeczhEd2Jiz/fcabIISgXEdSpTYJhb0ct0VJRxcg4c8c7wIDAQAB", "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": "", "propagation": { "consistent": false, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "76.76.21.21" ], "time_ms": 239.5 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "76.76.21.21" ], "time_ms": 271.74 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "76.76.21.21" ], "time_ms": 250.08 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "146.112.61.108" ], "time_ms": 52.4 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "76.76.21.21" ], "time_ms": 245.84 } ] } }, "ssl": { "available": true, "issuer": "Let's Encrypt", "subject": "biolinky.co", "valid_from": "2026-06-23T02:18:44-05:00", "valid_to": "2026-09-21T02:18:43-05:00", "days_remaining": 40, "san": [ "biolinky.co" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_128_GCM_SHA256" }, "http": { "url": "https://biolinky.co/", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "age": "0", "cache-control": "private, no-cache, no-store, max-age=0, must-revalidate", "content-type": "text/html; charset=utf-8", "date": "Tue, 11 Aug 2026 09:18:47 GMT", "link": "; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"font\"; crossorigin=\"\"; type=\"font/woff2\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\", ; rel=preload; as=\"image\"", "server": "Vercel", "strict-transport-security": "max-age=63072000", "vary": "rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch", "x-matched-path": "/", "x-powered-by": "Next.js", "x-vercel-cache": "MISS", "x-vercel-id": "cle1::dub1::8vxcm-1786439927604-3a94311a6f90" }, "security_checks": { "strict-transport-security": true, "content-security-policy": false, "x-content-type-options": false, "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": "Vercel", "powered_by": "Next.js" }, "webpage": { "url": "https://biolinky.co/", "title": "Info", "description": "Biolinky is a free link-in-bio tool, used by over 350K people worldwide.", "success": true, "error": "", "status": 200 }, "network": { "76.76.21.21": { "success": true, "country": "United States", "country_code": "US", "region": "California", "city": "Los Angeles", "latitude": 34.0536909, "longitude": -118.2427659, "asn": 16509, "organization": "Vercel, Inc", "isp": "Amazon.com, Inc.", "timezone": "America/Los_Angeles" } }, "smtp": { "host": "SMTP.GOOGLE.COM", "ports": [ { "port": 25, "open": false, "time_ms": 44.2, "banner": "220 mx.google.com ESMTP 586e51a60fabf-45e1dc794a1si849457fac.354 - gsmtp", "error": "No connection" }, { "port": 465, "open": false, "time_ms": 4043.2, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4021.3, "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": 84.61 }