{ "ok": true, "domain": "hunter.io", "generated_at": "2026-08-10T13:52:32-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 91, "label": "Excellent", "categories": { "dns": 100, "mail": 90, "security": 84, "network": 70, "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": "2 IPv4 address(es) detected." }, { "category": "dns", "title": "IPv6 (AAAA)", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "2 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": 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": "84 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": 0, "lost_points": 30, "detail": "PTR not detected." }, { "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": 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": "2 IPv4 address(es) detected.", "category": "dns", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "ok", "title": "IPv6 (AAAA)", "detail": "2 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": "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": "84 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": "error", "title": "PTR reverse DNS", "detail": "PTR not detected.", "category": "network", "max_points": 30, "earned_points": 0, "lost_points": 30 }, { "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": "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": [ "172.66.148.124", "104.20.23.210" ], "AAAA": [ "2606:4700:10::ac42:947c", "2606:4700:10::6814:17d2" ], "CNAME": [], "MX": [ "5 alt2.aspmx.l.google.com.", "5 alt1.aspmx.l.google.com.", "10 alt4.aspmx.l.google.com.", "10 alt3.aspmx.l.google.com.", "1 aspmx.l.google.com." ], "TXT": [ "\"v=spf1 include:spf.mtasv.net include:_spf.google.com include:customeriomail.com -all\"", "\"hubspot-developer-verification=ZTZhMWI2NzMtYTcxNC00MGRjLThiOGUtYzk2NTAwOTM0Yjlm\"", "\"google-site-verification=mdKcXT7H_uTJjz2X9z3WnG_e2SP5E4quOXMf9aqLok0 ?\"", "\"openai-domain-verification=dv-PLkIqCi6bgk7AOSgXwd2ClXx\"", "\"anthropic-domain-verification-nbgmm7=kJ7t8ZKIQ1clF8owIPg1eTQXo\"", "\"ahrefs-site-verification_5e786e8e14c2fee926bf02be40364a6d329644b2e4956a1147b71847f9cd2210\"", "\"stripe-verification=f59d4a2f3eadcb59d811080b7ab5ca0fd076c2a5b3b5b1a414bc6cf836b6dd51\"", "\"MS=71F27C27873257FC640468489763ED35D88A3140\"", "\"1password-site-verification=C2LN64B6MZD7LHMQIQXJF6JNSM\"" ], "NS": [ "greg.ns.cloudflare.com.", "gina.ns.cloudflare.com." ], "SOA": [ "gina.ns.cloudflare.com. dns.cloudflare.com. 2411832295 10000 2400 604800 1800" ], "CAA": [ "0 issue \"comodoca.com\"", "0 issue \"letsencrypt.org\"", "0 issuewild \"letsencrypt.org\"", "0 issuewild \"ssl.com\"", "0 issue \"digicert.com; cansignhttpexchanges=yes\"", "0 issuewild \"comodoca.com\"", "0 issue \"ssl.com\"", "0 issuewild \"digicert.com; cansignhttpexchanges=yes\"", "0 issuewild \"pki.goog; cansignhttpexchanges=yes\"", "0 issue \"pki.goog; cansignhttpexchanges=yes\"" ], "DS": [ "2371 13 2 5101AC768DACC37E4B8E61C091C04C7EAC6350296AD2F581356D130F A6EE46B1" ], "DNSKEY": [ "256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==", "257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==" ], "RRSIG": [], "NSEC": [ "\\000.hunter.io. 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": [ "172.66.148.124", "104.20.23.210" ], "ipv6": [ "2606:4700:10::ac42:947c", "2606:4700:10::6814:17d2" ] }, "mail": { "spf": "v=spf1 include:spf.mtasv.net include:_spf.google.com include:customeriomail.com -all", "dmarc": "v=DMARC1; p=reject; pct=100; rua=mailto:151af8ffc4694c18ad0d8c1b9bb3588c@dmarc-reports.cloudflare.net,mailto:re+fokv6ipbzu1@dmarc.postmarkapp.com,mailto:re+2d17d571347c@inbound.dmarcdigests.com; sp=reject; aspf=r;", "dkim_selector": "google", "dkim_host": "google._domainkey.hunter.io", "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAm1nD5B64na2hi1hFojnS89P7ouZshiXXKEYBnHib9O/VZ+T/tKWhRM+EDP+ZuvGeKxXH1e6+J7Pj+IRH2UdzM5hAZBLeuFOVPZlPvlA36doDB//vNVQU3gwwES5Q3Z7TrB46CDr87CpwUT1Qz4FWypnQENnyJcrLPdK7OzX+C+1ZqyKbJPb+U6OjutFQ363+HY/8bU4ZI/BR+i8NJF5OnC46G/xSGIdqWcPA72xXdYXVorpdrSuG7q8Pw7+3gJqhTLyj6+mEggJlX5suJWeo/j+QmMA7VFcJ5UUNdPVYMfmqufcnv70dmYbupSzBN78hHvCC2eKr4Lv5uR5ilRLo9QIDAQAB", "spf_analysis": { "valid": true, "lookups": 3, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "reject" }, "bimi": "v=BIMI1; l=https://bimi.hunter.io/logo.svg; a=self", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "104.20.23.210", "172.66.148.124" ], "time_ms": 71.46 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "104.20.23.210", "172.66.148.124" ], "time_ms": 21 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "104.20.23.210", "172.66.148.124" ], "time_ms": 67.99 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "104.20.23.210", "172.66.148.124" ], "time_ms": 41.61 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "104.20.23.210", "172.66.148.124" ], "time_ms": 57.06 } ] } }, "ssl": { "available": true, "issuer": "Google Trust Services", "subject": "hunter.io", "valid_from": "2026-08-05T11:56:31-05:00", "valid_to": "2026-11-03T11:55:24-06:00", "days_remaining": 84, "san": [ "hunter.io", "link-builders.hunter.io" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_256_GCM_SHA384" }, "http": { "url": "https://hunter.io/", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "date": "Mon, 10 Aug 2026 18:52:24 GMT", "content-type": "text/html; charset=utf-8", "cache-control": "max-age=0, private, must-revalidate", "speculation-rules": "\"/cdn-cgi/speculation\"", "link": "; rel=preload; as=style; nopush,; rel=modulepreload; as=script; crossorigin=; nopush", "permissions-policy": "interest-cohort=()", "referrer-policy": "strict-origin-when-cross-origin", "server": "cloudflare", "set-cookie": "_emailhunter_session=2jkWJWj6tGrKjK%2Fd9j%2B9gi8EXcuKK5TB2KOJVRUArXI%2F5Daht39hsDPIewUImy9LxRDR2KFJglIcPzk%2FfD53thVzFS8K1bAtrXI%2BQ4a0x%2BLylgPnv2eUvOeT9zcipwCyA9%2FaEbnISwI9Er9QbpckP6w6koQQPb7htDq3uimwSNBdaImNMb8oN1XqfE8bv9tB6H1VhH4OP840J4OljhkgZfZME%2B%2BffpeAUzk0O6qO2l9S8hJE7AKIASYLw4tEF8r9c9JP%2FZnJus7OVIwTq%2BY35NHiaNq4IIgpze5k8A%3D%3D--wCph9TMLqezjzJ3K--L0Nf%2BD%2F6njKawVlm3z%2BP4g%3D%3D; domain=hunter.io; path=/; secure; httponly; samesite=lax", "vary": "Accept", "x-content-type-options": "nosniff", "x-frame-options": "SAMEORIGIN", "x-permitted-cross-domain-policies": "none", "x-request-id": "a0011e03-cd38-4686-b307-c09d137fb258", "x-runtime": "0.012056", "x-xss-protection": "0", "cf-cache-status": "DYNAMIC", "strict-transport-security": "max-age=31536000; includeSubDomains; preload", "cf-ray": "a2913289e8921e79-ORD", "alt-svc": "h3=\":443\"; ma=86400" }, "security_checks": { "strict-transport-security": true, "content-security-policy": false, "x-content-type-options": true, "x-frame-options": true, "referrer-policy": true, "permissions-policy": true, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "cloudflare", "powered_by": "" }, "webpage": { "url": "https://hunter.io/", "title": "Find email addresses and send cold emails • Hunter", "description": "Hunter is the leading solution to find and verify professional email addresses. Start using Hunter and connect with the people that matter for your business.", "success": true, "error": "", "status": 200 }, "network": { "172.66.148.124": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "104.20.23.210": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "alt2.aspmx.l.google.com", "ports": [ { "port": 25, "open": false, "time_ms": 0.8, "banner": "", "error": "Network is unreachable" }, { "port": 465, "open": false, "time_ms": 4019, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4021.5, "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": 114.21 }