{
    "ok": true,
    "domain": "fsf.org",
    "generated_at": "2026-08-08T21:56:42-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
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    "score": {
        "total": 81,
        "label": "Good",
        "categories": {
            "dns": 85,
            "mail": 70,
            "security": 69,
            "network": 85,
            "availability": 100
        },
        "category_weights": {
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            "mail": 20,
            "security": 25,
            "network": 10,
            "availability": 20
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        "items": [
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                "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)",
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                "earned_points": 10,
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                "detail": "1 IPv6 address(es) detected."
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            {
                "category": "dns",
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                "category": "dns",
                "title": "SOA record",
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                "category": "dns",
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                "earned_points": 5,
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                "detail": "Certificate authority restriction."
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            {
                "category": "dns",
                "title": "DNS propagation",
                "max_points": 10,
                "earned_points": 10,
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            },
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                "category": "mail",
                "title": "MX records",
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                "earned_points": 20,
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                "detail": "1 MX record(s)."
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            {
                "category": "mail",
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                "earned_points": 25,
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            {
                "category": "mail",
                "title": "DMARC",
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                "earned_points": 25,
                "lost_points": 0,
                "detail": "DMARC policy published."
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            {
                "category": "mail",
                "title": "DKIM",
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                "earned_points": 0,
                "lost_points": 20,
                "detail": "No tested DKIM selector responded."
            },
            {
                "category": "mail",
                "title": "MTA-STS",
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                "earned_points": 0,
                "lost_points": 5,
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            },
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                "category": "mail",
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                "lost_points": 5,
                "detail": "TLS reporting policy."
            },
            {
                "category": "security",
                "title": "Valid TLS certificate",
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                "earned_points": 55,
                "lost_points": 0,
                "detail": "61 day(s) remaining."
            },
            {
                "category": "security",
                "title": "Certificate lifetime",
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                "earned_points": 10,
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                "category": "security",
                "title": "HTTP security headers",
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                "detail": "1 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
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                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: 174.0-24.188.51.209.in-addr.arpa"
            },
            {
                "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": 35,
                "lost_points": 0,
                "detail": "AAAA availability."
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            {
                "category": "availability",
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                "earned_points": 40,
                "lost_points": 0,
                "detail": "At least one address family must resolve."
            },
            {
                "category": "availability",
                "title": "HTTP response",
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                "earned_points": 40,
                "lost_points": 0,
                "detail": "HTTP/1.0 200 OK"
            },
            {
                "category": "availability",
                "title": "HTTPS final URL",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "Final URL uses HTTPS."
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        "diagnostics": [
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                "level": "ok",
                "title": "IPv4 (A)",
                "detail": "1 IPv4 address(es) detected.",
                "category": "dns",
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                "earned_points": 30,
                "lost_points": 0
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            {
                "level": "ok",
                "title": "IPv6 (AAAA)",
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                "category": "dns",
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                "earned_points": 10,
                "lost_points": 0
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            {
                "level": "ok",
                "title": "Name server redundancy",
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                "category": "dns",
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                "earned_points": 20,
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            {
                "level": "ok",
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                "level": "error",
                "title": "DNSSEC chain",
                "detail": "Both DS and DNSKEY are required.",
                "category": "dns",
                "max_points": 15,
                "earned_points": 0,
                "lost_points": 15
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            {
                "level": "ok",
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                "earned_points": 5,
                "lost_points": 0
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                "level": "ok",
                "title": "DNS propagation",
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                "earned_points": 10,
                "lost_points": 0
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            {
                "level": "ok",
                "title": "MX records",
                "detail": "1 MX record(s).",
                "category": "mail",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
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            {
                "level": "ok",
                "title": "SPF",
                "detail": "SPF policy published.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0
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            {
                "level": "ok",
                "title": "DMARC",
                "detail": "DMARC policy published.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 25,
                "lost_points": 0
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            {
                "level": "error",
                "title": "DKIM",
                "detail": "No tested DKIM selector responded.",
                "category": "mail",
                "max_points": 20,
                "earned_points": 0,
                "lost_points": 20
            },
            {
                "level": "error",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
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                "earned_points": 0,
                "lost_points": 5
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                "level": "error",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
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                "earned_points": 0,
                "lost_points": 5
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            {
                "level": "ok",
                "title": "Valid TLS certificate",
                "detail": "61 day(s) remaining.",
                "category": "security",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0
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            {
                "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
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            {
                "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": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: 174.0-24.188.51.209.in-addr.arpa",
                "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": "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
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            {
                "level": "ok",
                "title": "HTTP response",
                "detail": "HTTP/1.0 200 OK",
                "category": "availability",
                "max_points": 40,
                "earned_points": 40,
                "lost_points": 0
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            {
                "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": [
                "209.51.188.174"
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            "AAAA": [
                "2001:470:142:4::a"
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            "CNAME": [],
            "MX": [
                "10 mail.fsf.org."
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            "TXT": [
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            "NS": [
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                "ns2.gnu.org.",
                "ns4.gnu.org."
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            "SOA": [
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            "CAA": [
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