{
    "ok": true,
    "domain": "readthedocs.org",
    "generated_at": "2026-08-08T20:21:47-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 87,
        "label": "Good",
        "categories": {
            "dns": 80,
            "mail": 90,
            "security": 88,
            "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": 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": 10,
                "lost_points": 0,
                "detail": "Agreement between public resolvers."
            },
            {
                "category": "mail",
                "title": "MX records",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "3 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": "37 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": 23,
                "lost_points": 12,
                "detail": "6 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": "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": "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": "3 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": "37 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": "6 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 23,
                "lost_points": 12
            },
            {
                "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": [
                "104.18.7.29",
                "104.18.6.29"
            ],
            "AAAA": [
                "2606:4700::6812:61d",
                "2606:4700::6812:71d"
            ],
            "CNAME": [],
            "MX": [
                "5 alt1.aspmx.l.google.com.",
                "1 aspmx.l.google.com.",
                "5 alt2.aspmx.l.google.com."
            ],
            "TXT": [
                "\"google-site-verification=-GDxsd6bay3wIn9zgT0lG0397PpmQMBKzP_W6B9oSxM\"",
                "\"v=spf1 include:_spf.mlsend.com include:_spf.google.com ~all\""
            ],
            "NS": [
                "tegan.ns.cloudflare.com.",
                "ivan.ns.cloudflare.com."
            ],
            "SOA": [
                "ivan.ns.cloudflare.com. dns.cloudflare.com. 2410085944 10000 2400 604800 1800"
            ],
            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "104.18.7.29",
            "104.18.6.29"
        ],
        "ipv6": [
            "2606:4700::6812:61d",
            "2606:4700::6812:71d"
        ]
    },
    "mail": {
        "spf": "v=spf1 include:_spf.mlsend.com include:_spf.google.com ~all",
        "dmarc": "v=DMARC1; p=none; rua=mailto:42c49d9b4a484188a99b6a9a589b8d25@dmarc-reports.cloudflare.net;",
        "dkim_selector": "google",
        "dkim_host": "google._domainkey.readthedocs.org",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmkmCaleu4oENo69BW+WbN1Mr1FjqYzlMm+iYmFMMeMvaDhBOuPmL/2xsR8wVfhfA+E0lsr7kK3Hd93vTRTAIBckXdOKy6sDnZnCJq/g52+wHHdwstiHugyVSlpEaV0+zAL6omhR+LhMF3st+U/MJEX2gQawLl0+3TBPcrmeChMfWLU0YKoi2N8igtTwReYXGVj9LIgUszzbj/i+naqKHYhbSWpaGWDIYjECk4mnkaf0Fvd9ktx49e/dgj+9HIk0iIO9B8TVVnDgTA3XDjAismgWbWCQRfLYpcIiZCQEsnW/0j4LX1VvHuoOy0cASIfuTGcivkU9npWiOPd2skieeAQIDAQAB",
        "spf_analysis": {
            "valid": true,
            "lookups": 2,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "104.18.6.29",
                        "104.18.7.29"
                    ],
                    "time_ms": 60.29
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "104.18.6.29",
                        "104.18.7.29"
                    ],
                    "time_ms": 20.16
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "104.18.6.29",
                        "104.18.7.29"
                    ],
                    "time_ms": 23.82
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "104.18.6.29",
                        "104.18.7.29"
                    ],
                    "time_ms": 69.66
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "104.18.6.29",
                        "104.18.7.29"
                    ],
                    "time_ms": 134.23
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Google Trust Services",
        "subject": "readthedocs.org",
        "valid_from": "2026-06-17T11:48:22-05:00",
        "valid_to": "2026-09-15T12:48:19-05:00",
        "days_remaining": 37,
        "san": [
            "readthedocs.org",
            "*.readthedocs.org"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://about.readthedocs.com/?ref=app.readthedocs.org",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "date": "Sun, 09 Aug 2026 01:21:39 GMT",
            "content-type": "text/html; charset=utf-8",
            "content-length": "0",
            "location": "https://about.readthedocs.com/?ref=app.readthedocs.org",
            "server": "cloudflare",
            "cf-ray": "a282f1fb5ba95156-STL",
            "content-security-policy": "connect-src 'self' https://*.ingest.us.sentry.io https://ka-p.fontawesome.com https://kit.fontawesome.com https://plausible.io/api/event ws://app.readthedocs.org:10001/ws; font-src 'self' data: https://ka-p.fontawesome.com https://app-assets.readthedocs.org/; default-src 'none'; frame-src https://js.stripe.com/; base-uri 'self'; form-action 'self' https://github.com https://gitlab.com https://bitbucket.org https://id.atlassian.com https://accounts.google.com https://billing.stripe.com https://checkout.stripe.com https://webhook.frontapp.com/forms/036c4169294f3b04abaa/dXtihffn7rLqYHi1tASB_7ppEgrNQcUXDNE-2JAXNZac3pdQ85Vjn3agjSnZSnCVomF1u6PT98oAyid-I_OMwE2JtwXXiVoXlaTj0VAn_7NPjQCEQcvjrB6QZZ8; frame-ancestors 'none'; style-src 'self' 'unsafe-inline' https://app-assets.readthedocs.org/; script-src 'self' 'unsafe-eval' https://kit.fontawesome.com https://js.stripe.com/ https://app-assets.readthedocs.org/; img-src 'self' data: https:; report-uri https://o40776.ingest.us.sentry.io/api/148442/security/?sentry_key=48196e632bb14305ad3fe47c6570e363",
            "x-frame-options": "DENY",
            "x-content-type-options": "nosniff",
            "referrer-policy": "no-referrer-when-downgrade",
            "cross-origin-opener-policy": "same-origin",
            "vary": "Accept-Encoding",
            "content-language": "en",
            "strict-transport-security": "max-age=31536000;",
            "x-backend": "web-i-07b2ca1566a8a2f70",
            "age": "1653",
            "expires": "Sun, 09 Aug 2026 01:51:39 GMT",
            "cache-control": "max-age=1800, stale-if-error=86400, public",
            "cf-cache-status": "HIT",
            "set-cookie": "__cf_bm=ifa5qc.RcBEoCn5ulYvHmL58H.0g6gKJI3dc0Dal2Cw-1786238499.097325-1.0.1.1-Ld6UdjdQskDGU7VXX9cz2F_wUYfHhde1B9IaX11LszKqB2_P3JKt.91hFdipjM7j1NmmGsIMLPVHh4Rk0gFOQPm9II_AOl5vApKFLblhwnunrcJR9m2tIbPppkXPmMuQ; HttpOnly; SameSite=None; Secure; Path=/; Domain=about.readthedocs.com; Expires=Sun, 09 Aug 2026 01:51:39 GMT",
            "access-control-allow-origin": "*",
            "last-modified": "Wed, 20 May 2026 07:29:54 GMT",
            "access-control-allow-methods": "HEAD, OPTIONS, GET",
            "cdn-cache-control": "public, max-age=1800, stale-if-error=86400",
            "x-amz-id-2": "kUUsT91Aj3v8pTlsNodOfeNmJEGm0pz4T3W/UO5S5yrcz9M5pUoXwLqAlq1izq6HpHhOhCNAM2wXfK90Dy9pjJUuo0ZwyBZ4",
            "x-amz-meta-mtime": "1779262188.021456706",
            "x-amz-request-id": "CY6XF8846CB7GQ9G",
            "x-amz-server-side-encryption": "AES256",
            "x-rtd-domain": "about.readthedocs.com",
            "x-rtd-force-addons": "true",
            "x-rtd-path": "/proxito/html/readthedocs-about/latest/index.html",
            "x-rtd-project": "readthedocs-about",
            "x-rtd-project-method": "custom_domain",
            "x-rtd-resolver-filename": "/",
            "x-rtd-version": "latest",
            "x-rtd-version-method": "path",
            "x-served": "Nginx-Proxito-Sendfile",
            "etag": "W/\"e5974de9a3e6efa290acbab723045c83\"",
            "alt-svc": "h3=\":443\"; ma=86400"
        },
        "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": true,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "cloudflare",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://about.readthedocs.com/?ref=app.readthedocs.org",
        "title": "Full featured documentation deployment platform - Read the Docs",
        "description": "Read the Docs is a documentation building and hosting platform aimed at helping developers creating documentation from code with versioned documentation, integrated search, pull request previews and more.",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "104.18.7.29": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "104.18.6.29": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "alt1.aspmx.l.google.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 1.2,
                "banner": "",
                "error": "Network is unreachable"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4018.9,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4020,
                "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": 100.57
}