{
    "ok": true,
    "domain": "cancer.gov",
    "generated_at": "2026-08-08T19:25:30-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 87,
        "label": "Good",
        "categories": {
            "dns": 100,
            "mail": 70,
            "security": 77,
            "network": 85,
            "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": 10,
                "lost_points": 0,
                "detail": "1 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": "11 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": 0,
                "lost_points": 20,
                "detail": "No tested DKIM selector responded."
            },
            {
                "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": "32 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": 12,
                "lost_points": 23,
                "detail": "3 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: gem-measures.org"
            },
            {
                "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."
            },
            {
                "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": "ok",
                "title": "IPv6 (AAAA)",
                "detail": "1 IPv6 address(es) detected.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "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": "11 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": "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",
                "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": "32 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": "3 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 12,
                "lost_points": 23
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: gem-measures.org",
                "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
            },
            {
                "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": [
                "129.43.254.39"
            ],
            "AAAA": [
                "2607:f220:41d:21c1::812b:fe27"
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            "CNAME": [],
            "MX": [
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                "10 nihcesxway5.hub.nih.gov.",
                "10 nihcesxwayst06.hub.nih.gov.",
                "10 nihcesxway3.hub.nih.gov.",
                "10 nihcesxway2.hub.nih.gov.",
                "10 nihcesxway4.hub.nih.gov.",
                "10 nihcesxwayst01.hub.nih.gov.",
                "10 nihcesxwayst03.hub.nih.gov.",
                "10 nihcesxwayst02.hub.nih.gov.",
                "10 nihcesxwayst04.hub.nih.gov.",
                "10 nihcesxwayst05.hub.nih.gov."
            ],
            "TXT": [
                "\"v=spf1 include:nih.gov ~all\"",
                "\"google-site-verification=xtotja2khgp7lafpuwbTxpd0-GTHamG6B-n_BlJHaYY\"",
                "\"b26ec43103814a09b7d8d2814fef549c\"",
                "\"_fcy04k1qajtq6ael7l4pq0ymlwx3u81\"",
                "\"google-site-verification=7cgm_p1qmwNsajA-7lLR3dcxWTnuLGSnd_1w51qD2M4\"",
                "\"identrust_validate=W64ssWDA7S5UBEN3Lx/2gIfJalru4LeAcpUgqQByIiRY\"",
                "\"jrk6xg81sjswjytr4yyqkp6p0d8whjpl\"",
                "\"facebook-domain-verification=oc5eiigp252miw61og17pvqvsz4j0t\"",
                "\"a/MYD7ruuKvW/ln4j50WGOR3Ms9scfgPXKrR4FASC80qVun5eHuz/6s5Xxh/IsTAaDc5+wweHS9ti7aY/jevfA==\"",
                "\"google-site-verification=o1YqZG4UHZPWTywBLlIYz3wFyUsHtadoVCjtuW6liPw\"",
                "\"identrust_validate=KShTAADOwzz+em27pU3J9c6LpvdulIpNLU5CkFAc3LaE\"",
                "\"_th2y9nk16oxmsorot9619u4ivowe9s1\"",
                "\"_0puhfnxczqycfy4u4kmtp0ob01l6ym6\"",
                "\"vaikid9pftv61hpg5b1ll0o1au\"",
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            "NS": [
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                "ns.nih.gov.",
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            ],
            "SOA": [
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            ],
            "CAA": [
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                "0 issuewild \"digicert.com\"",
                "0 issue \"godaddy.com\"",
                "0 issue \"entrust.net\"",
                "0 issue \"sectigo.com\"",
                "0 issue \"letsencrypt.org\"",
                "0 issue \"digicert.com\"",
                "0 issue \"amazon.com\"",
                "0 issue \"identrust.com\""
            ],
            "DS": [
                "18941 8 2 B2C71B3869DB86EACD0BEBABB18F6F5E6BC4CD01AE5B86D5122E1515 CBE2E6DE"
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            "DNSKEY": [
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            "RRSIG": [
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                "TXT 8 2 7200 20260814045058 20260808045016 54648 cancer.gov. YV9Lr0FmzHjjXaZWsBHcIVkVxMXEwgEEoKgc4r9HukS9hWDkhtgKqk12 kyuK2aQ9PG6ANZ+OpNAzZvOlYBh4kzx91fBkcLBldh0qVjSSmNx6fLDn vCaQ0l82RFcOn0kKYYaZYwr30frftJHox3RUkPOJydST+kddekNbcMce oaE=",
                "MX 8 2 7200 20260814050947 20260808043456 54648 cancer.gov. IdPxwN1/0CysFCB+lRjBwSfkz8mntrgJ9gOEonSCH0z5ib25WE+rTwZ1 b5yvSkXlMsVOo1ytu8eR4d2gBABJrcUS1SxgtLNoA6WGOAQSlXjW3OZ6 59R+NvQQ/0ZVgJcMojZQji10qLmONjyGlVLSrvzdvma1gXE4TaeWQ5Ms Yc0=",
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            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
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        ],
        "ipv6": [
            "2607:f220:41d:21c1::812b:fe27"
        ]
    },
    "mail": {
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        "dkim_host": "",
        "dkim": "",
        "spf_analysis": {
            "valid": true,
            "lookups": 1,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "gem-measures.org",
        "propagation": {
            "consistent": true,
            "results": [
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                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
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                    ],
                    "time_ms": 40.68
                },
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                    "provider": "Cloudflare",
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                    "time_ms": 53.23
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                    "provider": "Quad9",
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                    "result": [
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                    ],
                    "time_ms": 78.1
                },
                {
                    "provider": "OpenDNS",
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                    "result": [
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                    ],
                    "time_ms": 106.31
                },
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                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
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                    ],
                    "time_ms": 467.09
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "DigiCert Inc",
        "subject": "*.cancer.gov",
        "valid_from": "2026-02-23T18:00:00-06:00",
        "valid_to": "2026-09-10T18:59:59-05:00",
        "days_remaining": 32,
        "san": [
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            "cancer.gov",
            "ncif5.cancer.gov"
        ],
        "protocol": "TLSv1.2",
        "cipher": "ECDHE-RSA-AES256-GCM-SHA384"
    },
    "http": {
        "url": "https://www.cancer.gov/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "location": "https://www.cancer.gov/",
            "strict-transport-security": "max-age=31536000 ; includeSubDomains ; preload",
            "server": "nginx",
            "connection": "Keep-Alive",
            "content-length": "0",
            "content-type": "text/html; charset=UTF-8",
            "x-drupal-dynamic-cache": "MISS",
            "content-language": "en",
            "x-content-type-options": "nosniff",
            "x-frame-options": "SAMEORIGIN",
            "x-generator": "Drupal 10 (https://www.drupal.org)",
            "x-drupal-cache": "MISS",
            "last-modified": "Thu, 06 Aug 2026 14:17:33 GMT",
            "etag": "\"1786025853-gzip\"",
            "x-request-id": "v-913a928a-91a1-11f1-a78f-6b5a3a97d4b0",
            "x-ah-environment": "prod",
            "x-cache-hits": "13",
            "x-age": "17",
            "expires": "Sun, 09 Aug 2026 00:25:21 GMT",
            "cache-control": "max-age=0, no-cache",
            "pragma": "no-cache",
            "date": "Sun, 09 Aug 2026 00:25:21 GMT"
        },
        "security_checks": {
            "strict-transport-security": true,
            "content-security-policy": false,
            "x-content-type-options": true,
            "x-frame-options": true,
            "referrer-policy": false,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "nginx",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.cancer.gov/",
        "title": "Comprehensive Cancer Information - NCI",
        "description": "Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.",
        "success": true,
        "error": "",
        "status": 206
    },
    "network": {
        "129.43.254.39": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "nihcesxway.hub.nih.gov",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 1.2,
                "banner": "",
                "error": "Network is unreachable"
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