{ "ok": true, "domain": "taxfoundation.org", "generated_at": "2026-08-09T03:56:19-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 91, "label": "Excellent", "categories": { "dns": 70, "mail": 90, "security": 100, "network": 100, "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": 10, "lost_points": 0, "detail": "8 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": "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": "159 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": 35, "lost_points": 0, "detail": "9 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "PTR: server-3-166-96-110.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": 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": "4 IPv4 address(es) detected.", "category": "dns", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "ok", "title": "IPv6 (AAAA)", "detail": "8 IPv6 address(es) detected.", "category": "dns", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "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": "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": "159 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": "ok", "title": "HTTP security headers", "detail": "9 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 35, "lost_points": 0 }, { "level": "ok", "title": "PTR reverse DNS", "detail": "PTR: server-3-166-96-110.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": "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": [ "3.166.96.110", "3.166.96.108", "3.166.96.5", "3.166.96.11" ], "AAAA": [ "2600:9000:2798:7400:1c:cc62:e780:93a1", "2600:9000:2798:9800:1c:cc62:e780:93a1", "2600:9000:2798:3200:1c:cc62:e780:93a1", "2600:9000:2798:5800:1c:cc62:e780:93a1", "2600:9000:2798:c800:1c:cc62:e780:93a1", "2600:9000:2798:0:1c:cc62:e780:93a1", "2600:9000:2798:a400:1c:cc62:e780:93a1", "2600:9000:2798:5600:1c:cc62:e780:93a1" ], "CNAME": [], "MX": [ "0 taxfoundation-org.mail.protection.outlook.com." ], "TXT": [ "\"include:spf-us.emailsignatures365.com\"", "\"v=spf1 a mx ptr include:spf.protection.outlook.com include:spf.dynect.net include:servers.mcsv.net include:20785128.spf02.hubspotemail.net include:_spf.salesforce.com -all\"", "\"267C363244\"", "\"atlassian-domain-verification=ykDElOfDhkD0ZZ+GGs7eC8ZoaZitugLS9Qzo8MI6hG6UJ/v5KRGNnxGP1GErXxzW\"", "\"google-site-verification=bN-7qDjNP_IqgiV4HXKgX5rNze_vXtger_0tG4y-k3c\"", "\"MS=ms36814630\"", "\"apple-domain-verification=mPbx7o8ujRHkicTi\"", "\"00dj0000001rzlyea2\"", "\"canva-site-verification=8AznUPvo56Es8O6TY8JF2w\"" ], "NS": [ "ns-1800.awsdns-33.co.uk.", "ns-139.awsdns-17.com.", "ns-1011.awsdns-62.net.", "ns-1235.awsdns-26.org." ], "SOA": [ "ns-1235.awsdns-26.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400" ], "CAA": [], "DS": [], "DNSKEY": [], "RRSIG": [], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "3.166.96.110", "3.166.96.108", "3.166.96.5", "3.166.96.11" ], "ipv6": [ "2600:9000:2798:7400:1c:cc62:e780:93a1", "2600:9000:2798:9800:1c:cc62:e780:93a1", "2600:9000:2798:3200:1c:cc62:e780:93a1", "2600:9000:2798:5800:1c:cc62:e780:93a1", "2600:9000:2798:c800:1c:cc62:e780:93a1", "2600:9000:2798:0:1c:cc62:e780:93a1", "2600:9000:2798:a400:1c:cc62:e780:93a1", "2600:9000:2798:5600:1c:cc62:e780:93a1" ] }, "mail": { "spf": "v=spf1 a mx ptr include:spf.protection.outlook.com include:spf.dynect.net include:servers.mcsv.net include:20785128.spf02.hubspotemail.net include:_spf.salesforce.com -all", "dmarc": "v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@taxfoundation.org; ruf=mailto:dmarc-failure@taxfoundation.org;", "dkim_selector": "selector2", "dkim_host": "selector2._domainkey.taxfoundation.org", "dkim": "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCvz49ahlwi1MHAoZxHJgH8h7o5lp+n/b+jc83HNvRDCmeEInC8QzSoPr0mCP3uXqjoJMDbuS9+7Qlc3TtOlbiwLyFaY1tOgdsKomedTSMzZ7U/u2gjlD4JljK/1UxJ3Rb0RACJLXHn9Ad5paO4fXBPg1aAteG0jLXywy5gt6T8FQIDAQAB;", "spf_analysis": { "valid": true, "lookups": 8, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "quarantine" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "server-3-166-96-110.mci50.r.cloudfront.net", "propagation": { "consistent": false, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "3.170.103.12", "3.170.103.45", "3.170.103.49", "3.170.103.99" ], "time_ms": 51.32 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "3.170.103.12", "3.170.103.45", "3.170.103.49", "3.170.103.99" ], "time_ms": 76.64 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "3.166.96.108", "3.166.96.11", "3.166.96.110", "3.166.96.5" ], "time_ms": 150.69 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "3.170.103.12", "3.170.103.45", "3.170.103.49", "3.170.103.99" ], "time_ms": 73.69 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "3.166.96.108", "3.166.96.11", "3.166.96.110", "3.166.96.5" ], "time_ms": 277.8 } ] } }, "ssl": { "available": true, "issuer": "Amazon", "subject": "taxfoundation.org", "valid_from": "2026-07-01T19:00:00-05:00", "valid_to": "2027-01-15T17:59:59-06:00", "days_remaining": 159, "san": [ "taxfoundation.org", "www.taxfoundation.org" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_128_GCM_SHA256" }, "http": { "url": "https://taxfoundation.org/", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "content-type": "text/html; charset=UTF-8", "date": "Sun, 09 Aug 2026 04:32:40 GMT", "cache-control": "public, s-maxage=3600, stale-while-revalidate=86400, stale-if-error=86400", "x-tf-page-cache": "hit", "server": "nginx", "last-modified": "Sun, 09 Aug 2026 04:32:14 GMT", "access-control-allow-methods": "GET,POST", "access-control-allow-headers": "Content-Type, Authorization", "content-security-policy": "upgrade-insecure-requests", "cross-origin-embedder-policy": "unsafe-none; report-to='default'", "cross-origin-embedder-policy-report-only": "unsafe-none; report-to='default'", "cross-origin-opener-policy": "unsafe-none", "cross-origin-opener-policy-report-only": "unsafe-none; report-to='default'", "cross-origin-resource-policy": "cross-origin", "permissions-policy": "accelerometer=(), autoplay=(), camera=(), cross-origin-isolated=(), display-capture=(self), encrypted-media=(), fullscreen=*, geolocation=(self), gyroscope=(), keyboard-map=(), magnetometer=(), microphone=(), midi=(), payment=*, picture-in-picture=*, publickey-credentials-get=(), screen-wake-lock=(), sync-xhr=*, usb=(), xr-spatial-tracking=(), gamepad=(), serial=()", "referrer-policy": "strict-origin-when-cross-origin", "strict-transport-security": "max-age=63072000; includeSubDomains; preload", "x-content-security-policy": "default-src 'self'; img-src *; media-src * data:;", "x-content-type-options": "nosniff", "x-frame-options": "SAMEORIGIN", "x-permitted-cross-domain-policies": "none", "vary": "Accept-Encoding,Cookie", "x-cache": "Hit from cloudfront", "via": "1.1 9813855127ba5b8aefcc8b843c170b5c.cloudfront.net (CloudFront)", "x-amz-cf-pop": "MCI50-P3", "alt-svc": "h3=\":443\"; ma=86400", "x-amz-cf-id": "mY32Q4kK3YeAgf5bITZkLB0MASI3t9oCvAUc11Tasb18dD_eIslCWA==", "age": "15811" }, "security_checks": { "strict-transport-security": true, "content-security-policy": true, "x-content-type-options": true, "x-frame-options": true, "referrer-policy": true, "permissions-policy": true, "cross-origin-opener-policy": true, "cross-origin-embedder-policy": true, "cross-origin-resource-policy": true }, "server": "nginx", "powered_by": "" }, "webpage": { "url": "https://taxfoundation.org/", "title": "Tax Foundation | Principled, Insightful, Engaged", "description": "Tax Foundation is the world's leading independent tax policy nonprofit. We lead the tax reform debate toward smarter simpler policy.", "success": true, "error": "", "status": 200 }, "network": { "3.166.96.110": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "3.166.96.108": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "3.166.96.5": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "3.166.96.11": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "taxfoundation-org.mail.protection.outlook.com", "ports": [ { "port": 25, "open": false, "time_ms": 18.2, "banner": "", "error": "Network is unreachable" }, { "port": 465, "open": false, "time_ms": 4047.5, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4056.8, "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": 84.7 }