{ "ok": true, "domain": "protonmail.com", "generated_at": "2026-08-10T01:03:37-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 89, "label": "Good", "categories": { "dns": 90, "mail": 100, "security": 84, "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": "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": 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": "2 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": 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": "50 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": 19, "lost_points": 16, "detail": "5 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "PTR: 185-70-42-12.protonmail.ch" }, { "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": "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": "2 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": "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": "50 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": "5 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 19, "lost_points": 16 }, { "level": "ok", "title": "PTR reverse DNS", "detail": "PTR: 185-70-42-12.protonmail.ch", "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/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": [ "185.70.42.12" ], "AAAA": [], "CNAME": [], "MX": [ "5 mail.protonmail.ch.", "10 mailsec.protonmail.ch." ], "TXT": [ "\"yandex-verification: 6059b187e78de544\"", "\"mailru-verification: 14505c6eb222c847\"", "\"google-site-verification=RVUCKIFDkg-Spau8kEohQRsgyHEBUQcVehZqF6PAQcQ\"", "\"brave-ledger-verification=66a7f27fb99949cc0c564ab98efcc58ea1bac3e97eb557c782ab2d44b49aefd7\"", "\"google-site-verification=uXVNQLivTppnZssXHtMY7QVn70Mpd0x2U8pKj324Krk\"", "\"v=spf1 include:_spf.protonmail.ch ~all\"", "\"ahrefs-site-verification_4bdac6bbaa81e0d591d7c0f3ef238905c0521b69bf3d74e64d3775bcb2743afd\"", "\"google-site-verification=aq9zJnp3H3bNE0Y4D4rH5I5Dhj8VMaLYx0uQ7Rozfgg\"" ], "NS": [ "ns2.protonmail.com.", "ns1.protonmail.com.", "ns3.protonmail.com." ], "SOA": [ "ns1.protonmail.com. support.protonmail.ch. 2502172514 1200 144 1814400 7200" ], "CAA": [ "0 issue \"sectigo.com\"", "0 issue \"digicert.com\"", "0 iodef \"mailto:security@proton.me\"", "0 issue \"letsencrypt.org\"" ], "DS": [ "44693 13 2 9F8A2A3CEEE67B747C4CF7D52E6EB0DFD309FD363FD0D059DE66E966 7D038115" ], "DNSKEY": [ "257 3 13 VRvrqp0hFPeZdrFLfO9f/rtqZg/mlxCAgqkIeeGkTuAmCRLciJv995/2 aU1cvGDuKEMVuH23v8OdgqkqqtLIYA==", "256 3 13 a99hiIsSCxd/tXoMy1N5A0bqStx2ULvlBQ8KNOiBITu7cMsjjaMOKz7+ Ww3dKvc7U/HepwLRAml9AOTueCa1mA==" ], "RRSIG": [ "TXT 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. +5DJ6nBL17GwDWdaVHzYx0yB7ldydL7eaMib6Tf9894/P2Q467cSMvap IAkap724kgk11KnL6sqIxj8TajU4eg==", "SOA 13 2 1200 20260908232049 20260809222049 56075 protonmail.com. grIJ0s/k5tl1c4ezogAPr/TNuP6CMWjtgBU3VHLwVcwl/b5VLDpbfLo8 XHavyljFPVd46J2sO+8lGV7+omURgw==", "DNSKEY 13 2 1200 20260829235450 20260730234516 56075 protonmail.com. S/tk6zpEXrDGPjizGtYKS8FfC5sAeTu/4cWJb2dhsUM8asYn3RXVA5rp 1NJ3plChVjoOT43HvLXCA/tumvpRVg==", "DNSKEY 13 2 1200 20260829235450 20260730234516 44693 protonmail.com. q4K8zXOv4fn74C1SWJgVrS76c2L6uFlmmkRcZU3e/GSq6d0GWRvwS/Lb YKnahPB4rh2OBMS//P4cDaHEtR8rfg==", "NS 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. x2R+ocxk14GLZ8TdY/O7lIiCofWtO54QAGv8ETjkWb8a+NnULPpiEFmf eg3dvhazTebC6sCT7ysxH6Ht/q4nWA==", "A 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. sNslRnpOS44+07tsuvN3bo5CJ2CO+HUAClcvIsdPK4DFUSL89BHR3xPv xS/O4oyOPzZH/FFyI78GpeCirH/obA==", "MX 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. gWErz8h9pOOfsd2jFLZ6Hbt459PpCi89L25GKXHqUQ504pPx2WH9pClB 6BnsGXSZa/w+xVWgpg40FK4YEAsV9w==", "DS 13 2 86400 20260815025152 20260808014152 41446 com. /pmmzRTXo6djuvkzDBRX1wnOgg57HTdHwE2K710KlCAxmzJg7UF6EPyu mYef1HaW/cHtmzhGPrWl0h9unuKU0A==", "CAA 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. OwGekU7TTxuEbeucJW9aHnvKjiDJNfvy1vnUyCz0O19jCzf8qMuzSKFo wz7daH/nDlHinzxFr8Npv5bUNkwtlw==", "NSEC3PARAM 13 2 0 20260822015550 20260723010917 56075 protonmail.com. geL2roMUoA35o/7NKH2USmP1XLKvnPP2SQfuJtzfo8/yC8Nbw1GKwkOo hCR5dFF3AWR2jx2yK9fl90wuw3DICQ==" ], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "185.70.42.12" ], "ipv6": [] }, "mail": { "spf": "v=spf1 include:_spf.protonmail.ch ~all", "dmarc": "v=DMARC1; p=quarantine; fo=1; aspf=s; adkim=s;", "dkim_selector": "m1", "dkim_host": "m1._domainkey.protonmail.com", "dkim": "k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDNst6onPpOhFfnDwF9Rb9HZcpSPJSEQBF3aZndH9SnnAiSbQ0q4s1zjIF0n4UTxBWTXYbFFTAScWW3kPFSCBIvGwQz/E3snhxDf6d3uvhm4dwTCMvGQzD/NODP9LknZwNjYQeyILdRqX4dRNlgHfi4qqDGIXB02rUPqefc6dvAIQIDAQAB", "spf_analysis": { "valid": true, "lookups": 1, "final": "~all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "quarantine" }, "bimi": "v=BIMI1; l=; a=;", "mta_sts": "v=STSv1; id=190906205100Z;", "tls_rpt": "v=TLSRPTv1; rua=https://reports.proton.me/reports/smtptls" }, "advanced": { "ptr": "185-70-42-12.protonmail.ch", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "185.70.42.12" ], "time_ms": 25.07 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "185.70.42.12" ], "time_ms": 19.28 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "185.70.42.12" ], "time_ms": 23.44 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "185.70.42.12" ], "time_ms": 25.02 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "185.70.42.12" ], "time_ms": 40.71 } ] } }, "ssl": { "available": true, "issuer": "Let's Encrypt", "subject": "protonmail.com", "valid_from": "2026-07-01T08:13:17-05:00", "valid_to": "2026-09-29T08:13:16-05:00", "days_remaining": 50, "san": [ "account.protonvpn.com", "app.protonmail.ch", "beta.protonmail.com", "mail.protonmail.com", "old.protonmail.com", "pm.me", "protonmail.ch", "protonmail.com", "protonvpn.com", "secure.protonmail.com" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_256_GCM_SHA384" }, "http": { "url": "https://proton.me/mail", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "cache-control": "no-store, no-cache, must-revalidate, proxy-revalidate", "content-type": "text/html; charset=utf-8", "date": "Mon, 10 Aug 2026 06:03:27 GMT", "location": "https://proton.me/mail", "set-cookie": "Features=mailSignupABC:B; SameSite=lax; Secure; Max-Age=7776000000; Path=/", "strict-transport-security": "max-age=31536000; includeSubDomains; preload", "public-key-pins-report-only": "pin-sha256=\"CT56BhOTmj5ZIPgb/xD5mH8rY3BLo/MlhP7oPyJUEDo=\"; pin-sha256=\"35Dx28/uzN3LeltkCBQ8RHK0tlNSa2kCpCRGNp34Gxc=\"; report-uri=\"https://reports.proton.me/reports/tls\"", "x-frame-options": "deny", "x-content-type-options": "nosniff", "x-xss-protection": "0", "referrer-policy": "strict-origin-when-cross-origin", "x-permitted-cross-domain-policies": "none", "onion-location": "https://protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion/", "accept-ranges": "bytes", "content-length": "321190", "etag": "\"4e6a6-65875fd3830c0\"", "expires": "0", "last-modified": "Fri, 07 Aug 2026 14:40:43 GMT", "pragma": "no-cache", "vary": "Accept-Encoding", "x-ab-variant": "B", "content-security-policy": "default-src 'self'; media-src https://static.zdassets.com https://res.cloudinary.com https://pmecdn.protonweb.com; connect-src 'self' wss: https://protonmail.zendesk.com https://ekr.zdassets.com blob: https://account.proton.me https://reports.proton.me https://telemetry.proton.me https://*.algolia.net https://*.algolianet.com https://go.getproton.me https://noembed.com https://boards-api.greenhouse.io https://proton.me https://*.paypal.com https://*.paypalobjects.com https://growth.proton.me ; script-src 'self' blob: 'unsafe-eval' 'unsafe-inline' https://static.zdassets.com https://pmecdn.protonweb.com https://www.youtube.com https://platform.twitter.com https://*.paypal.com https://*.paypalobjects.com; style-src 'self' 'unsafe-inline' https://pmecdn.protonweb.com https://*.paypal.com https://*.paypalobjects.com; font-src 'self' https://pmecdn.protonweb.com; img-src 'self' data: blob: https:; frame-src 'self' data: blob: https://www.youtube-nocookie.com https://platform.twitter.com https://*.paypal.com https://*.paypalobjects.com; object-src 'self' data: blob:; child-src 'self' data: blob: https://*.paypal.com https://*.paypalobjects.com; report-uri https://reports.proton.me/reports/csp; frame-ancestors 'self' https://*.proton.me;" }, "security_checks": { "strict-transport-security": true, "content-security-policy": true, "x-content-type-options": true, "x-frame-options": true, "referrer-policy": true, "permissions-policy": false, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "", "powered_by": "" }, "webpage": { "url": "https://proton.me/mail", "title": "Proton Mail: Get a free email account with privacy and encryption | Proton", "description": "Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.", "success": true, "error": "", "status": 206 }, "network": { "185.70.42.12": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "mail.protonmail.ch", "ports": [ { "port": 25, "open": false, "time_ms": 37.7, "banner": "", "error": "Connection refused" }, { "port": 465, "open": false, "time_ms": 4057.8, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4021.1, "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": 106.54 }