{
    "ok": true,
    "domain": "uu.nl",
    "generated_at": "2026-08-08T21:02:47-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 94,
        "label": "Excellent",
        "categories": {
            "dns": 100,
            "mail": 95,
            "security": 84,
            "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": "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": 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": "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": 5,
                "lost_points": 0,
                "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": "181 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": 30,
                "lost_points": 0,
                "detail": "PTR: 83.217.76.86.static.hosted.by.combell.com"
            },
            {
                "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": "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": "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": "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": "ok",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 5,
                "lost_points": 0
            },
            {
                "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": "181 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": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: 83.217.76.86.static.hosted.by.combell.com",
                "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": [
                "83.217.76.86"
            ],
            "AAAA": [
                "2a00:1c98:10:25::84"
            ],
            "CNAME": [],
            "MX": [
                "0 uu-nl.mail.protection.outlook.com."
            ],
            "TXT": [
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                "\"signrequest-domain-validation=40cdf51de7e51a3f84de9f6f8abd2a374aa3d89acb3d6927003fb52af7f022eb\"",
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                "\"cisco-ci-domain-verification=5842c46b62263bd02abd37a7754654a4dff107f06a2b66a8477e2cdc761505a8\"",
                "\"atlassian-sending-domain-verification=72791b6c-e695-4116-8bbc-dd41675e5b98\"",
                "\"adobe-idp-site-verification=1f7a24c74c7d57187943e2d4ec7adcd37d3725b9a3a7d5857dd41637da012a6b\"",
                "\"v=easydus; cg=4b46d154-7e0f-4088-8f50-0a0638724512\"",
                "\"pardot997561=644046e4432766fb73dbc13a959693022e9e4bdeebddbd369e6a7603dc62aafa\"",
                "\"brevo-code:af27a511cfadd67db014e628614c7404\"",
                "\"google-site-verification=K3bIDuPg2RhRc-qYqyEau7MUnp3aN4oIM_6rWDe1M34\"",
                "\"mistral-domain-verification=4f9997f25fec87a7fa949b979b242e6c4eeb1c28\"",
                "\"apple-domain-verification=wydMRl66PAsBwOVk\"",
                "\"faxination=fen44162647\"",
                "\"v=spf1 ip4:131.211.14.0/24 ip4:145.0.1.0/24 ip4:195.169.13.0/24 ip6:2001:610:188:540::/64 ip4:131.211.31.135 ip4:131.211.194.8/30 ip4:145.101.112.2 ip6:2001:610:188:446:145:101:112:2 ip4:216.146.32.161/27 ip4:170.107.183.89 ip4:212.123.232.134 \" \"ip4:145.100.12.197  include:mailplus.nl include:mailswitch.nl include:spf.mandrillapp.com include:spf.protection.outlook.com include:spf.flowmailer.net ip4:131.174.59.196/30  -all\"",
                "\"autodesk-domain-verification=RfCX8IHaalDkeE1T-2PE\"",
                "\"pipo\"",
                "\"00D7Q000006uk9x=1TBQs00000007Sx\"",
                "\"HARICA-qgr0NyZthcl3PvsrBJ5\"",
                "\"MS=ms59510356\"",
                "\"bw=oqt3PIuXcjotJ6dvsl4A4bDskSdkcc56EiFM1AAAvZG3\""
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            "NS": [
                "azie.net.uu.nl.",
                "australie.net.uu.nl.",
                "ns1.zurich.surf.net.",
                "ns1.surfnet.nl."
            ],
            "SOA": [
                "dns.uu.nl. hostmaster.uu.nl. 2014760242 3600 600 1209600 3600"
            ],
            "CAA": [
                "0 issue \"letsencrypt.org\"",
                "0 issue \"sectigo.com\"",
                "0 issuewild \"digicert.com\"",
                "0 issuewild \"harica.gr\"",
                "0 iodef \"mailto:hostmaster@uu.nl\"",
                "0 issuewild \"sectigo.com\"",
                "0 issue \"harica.gr\"",
                "0 issuewild \"letsencrypt.org\"",
                "0 issue \"digicert.com\""
            ],
            "DS": [
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            ],
            "DNSKEY": [
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                "256 3 13 KVBIXAwC9m0doSnGvp6HC503TPv/grAb1C2FWmNQapG/jerSDkZuk0YE Gs4GyolPjERrkOiQ7atMysnzUGPPAQ==",
                "256 3 13 RrqNlGjcUxMc1K50pfZ4YTSi8Ulq5q8oMLy5rjsuT5VZ5KshEynttFGg D3HGISVxCBwNGVnZC1pN5h/4l7AzIw=="
            ],
            "RRSIG": [
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                "TXT 13 2 3600 20260828075915 20260729073358 58065 uu.nl. S58pjoSdIqhljwBg2ojrfwxane8IzGtTbHRdLBuZ9dUbZ/rrYK5LtVAL b5IJzsU5y69R+TKTQr6wqfwxJf+jKw==",
                "MX 13 2 3600 20260901164022 20260802154849 58065 uu.nl. o5C54d3ZN6pGBjpmUjApm/7nsBQzaxAJYoelNtYdJ2eNFceYc1N6iGnf xrHzBlM6mPu9JliAtMDt7ZR0RiawjQ==",
                "DS 13 2 3600 20260831200657 20260804000820 467 nl. lfogKCbTEkjlmMknM31YVg5n0UsIznp61CseWDo/IiTUnqM2UpHOvjwE Un2XeB+UmvSMKMpdydrv5mceDoZdCw=="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "83.217.76.86"
        ],
        "ipv6": [
            "2a00:1c98:10:25::84"
        ]
    },
    "mail": {
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        "dmarc": "v=DMARC1; p=quarantine; pct=100; rua=mailto:4ikuptsm@ag.eu.dmarcadvisor.com,mailto:dmarc.reporting@uu.nl;",
        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.uu.nl",
        "dkim": "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC9uK1cwYkKFVXBGuGE/hlVBtdYoxKtobhDOxupIBkvyf/xFn6TaVlsIswrnjmw+SVTvvuqKDX2xIZUMsJo8QFlm7+XfsVe6eu0CailHx7vheFJktVJYotQBtu2O/5MoXw/aAopeb1xq5AVf2q9U6LkaEEQSXRBf/nfFHLR6wIUqQIDAQAB; n=1024,1450040940,1465852140",
        "spf_analysis": {
            "valid": true,
            "lookups": 5,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "quarantine"
        },
        "bimi": "",
        "mta_sts": "v=STSv1; id=20230727133400;",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "83.217.76.86.static.hosted.by.combell.com",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
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                    ],
                    "time_ms": 66.85
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
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                    ],
                    "time_ms": 130.54
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                    ],
                    "time_ms": 164.74
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "83.217.76.86"
                    ],
                    "time_ms": 234.41
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
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                    ],
                    "time_ms": 157.81
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Hellenic Academic and Research Institutions CA",
        "subject": "uu.nl",
        "valid_from": "2026-07-22T01:46:50-05:00",
        "valid_to": "2027-02-06T00:46:49-06:00",
        "days_remaining": 181,
        "san": [
            "uu.nl",
            "www.uu.nl"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://www.uu.nl/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "content-length": "38865",
            "location": "https://www.uu.nl/",
            "date": "Fri, 07 Aug 2026 13:44:27 GMT",
            "server": "Apache",
            "cache-control": "max-age=31536000, public",
            "x-drupal-dynamic-cache": "MISS",
            "content-language": "nl",
            "x-content-type-options": "nosniff",
            "x-frame-options": "SAMEORIGIN",
            "expires": "Sun, 19 Nov 1978 05:00:00 GMT",
            "vary": "Cookie,Accept-Encoding",
            "permissions-policy": "camera=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()",
            "referrer-policy": "strict-origin-when-cross-origin",
            "x-permitted-cross-domain-policies": "none",
            "x-xss-protection": "0",
            "last-modified": "Fri, 07 Aug 2026 13:44:26 GMT",
            "content-type": "text/html; charset=UTF-8",
            "age": "130691",
            "etag": "W/\"1786110266-gzip\"",
            "accept-ranges": "bytes",
            "x-node": "web2-prod-bamaco-uu",
            "cache-tags": "HIT",
            "strict-transport-security": "max-age=31536000; includeSubDomains; preload;"
        },
        "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": "Apache",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.uu.nl/",
        "title": "Universiteit Utrecht | Sharing science, shaping tomorrow",
        "description": "De Universiteit Utrecht is een internationaal vooraanstaande onderzoeksuniversiteit waar studenten en onderzoekers samen werken aan een betere wereld.",
        "success": true,
        "error": "",
        "status": 206
    },
    "network": {
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            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "uu-nl.mail.protection.outlook.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 22.7,
                "banner": "",
                "error": "Network is unreachable"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4020.6,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4034.1,
                "banner": "",
                "error": "Connection timed out"
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        ]
    },
    "visitor": {
        "ip": "216.73.217.62",
        "reverse": "",
        "country": "",
        "country_code": "",
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