{
    "ok": true,
    "domain": "tudelft.nl",
    "generated_at": "2026-08-08T22:30:00-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 87,
        "label": "Good",
        "categories": {
            "dns": 90,
            "mail": 90,
            "security": 84,
            "network": 50,
            "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": 0,
                "lost_points": 10,
                "detail": "0 IPv6 address(es) detected."
            },
            {
                "category": "dns",
                "title": "Name server redundancy",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "5 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": 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": "182 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: tudelft.nl"
            },
            {
                "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": 0,
                "lost_points": 35,
                "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": "error",
                "title": "IPv6 (AAAA)",
                "detail": "0 IPv6 address(es) detected.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10
            },
            {
                "level": "ok",
                "title": "Name server redundancy",
                "detail": "5 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": "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": "182 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: tudelft.nl",
                "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": "error",
                "title": "IPv6 connectivity",
                "detail": "AAAA availability.",
                "category": "network",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "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": [
                "130.161.128.82"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "10 tudelft-nl.mail.protection.outlook.com."
            ],
            "TXT": [
                "\"MS=ms66592311\"",
                "\"HARICA-svOKy8ChPYfvbMCCCgv\"",
                "\"google-site-verification=vlPyHrqp8W5EwG3sBPAoZXrMFzyYmVJeDlDshyLCrzk\"",
                "\"adobe-idp-site-verification=6c308adba5fba6d4295d8d092b40f332747dd3b7896740e9ee3a9c87e8691bb1\"",
                "\"HARICA-9s6oKKJ124kmU6v3f6A\"",
                "\"miro-verification=19371c38bfc06be58d667cbb59a02508a880607d\"",
                "\"L4Rcgp2aufV3yNQT7HZ7nmdmW+S8VVsOkBuh2Rk4Z7WKyHrLcd/aKCgVE+sihdcNsi/LkDeS8otItlX8kSURUA==\"",
                "\"miro-verification=034228b8046d801ff6579bb93100816ce0fac54f\"",
                "\"figma-domain-verification=608b37abc404e00a10b2771e20c76b415cd1832b5faf4e3c500a545808eb4803-1775651511\"",
                "\"successfactors-site-verification=NGMxMTBlMzQ5ZmFiZWRiMTU1ZWVkZDk4MTczYzE5ZDhhZTVhNzI4NTI4OGZjYjI4OTc2YjYyM2RhNGNhZWI4Zg==\"",
                "\"v=spf1 ip4:130.161.131.0/24 ip4:131.180.77.44 ip4:52.59.111.152 include:spf.protection.outlook.com ip4:46.31.188.52 ip4:212.83.209.198 ip4:212.83.209.204 include:spf.afas.online ip4:94.143.211.206 ip4:94.143.211.207 include:spf.recruitmail.com \" \"ip4:46.31.48.0/21 include:spf.topdesk.net include:spf.faqtory.nl include:a._spf.brightspace.com ip4:136.144.199.28 ip4:136.144.226.32 ip4:77.74.54.216 ip4:213.206.232.0/27 ip4:185.136.64.128/27 ip4:185.136.65.128/27 include:spf-x-tudelft-nl.dataduiker.app\" \" ~all\"",
                "\"amazonses:iyPCyEjMv6YpdMhVuagmzM+6PIiSZt+kj9J0DnmImnQ=\"",
                "\"EYCG94TF05LGAIXGKNS3B4SXZ796W7SPSHUPP1E3M\"",
                "\"apple-domain-verification=TWilLuVqEqmPHPlP\"",
                "\"sendinblue-code:ef5755c78c2226424706a65a2413f0a1\"",
                "\"HARICA-aXJ2Kuvqc5hU8cVsyIR\"",
                "\"openatts a=dns-did; p=did:ethr:0x49264cd8041010adf43a926436e0ac38c053c066#controller; v=1.0;\"",
                "\"google-site-verification=xwRqT1z_-EE597mEH4Qfh_TQTFYhTS-bWoYM009P-E8\"",
                "\"google-site-verification=_nk7k44TtWKQJSgLYer_J68BmKIY83V9Heax6u7oRRA\"",
                "\"jamf-site-verification=Ddcd23-bTSJECc10j2URmw\""
            ],
            "NS": [
                "ns1.tudelft.nl.",
                "ns1.surfnet.nl.",
                "ns2.surfnet.nl.",
                "ns1.zurich.surf.net.",
                "ns2.tudelft.nl."
            ],
            "SOA": [
                "ns1.tudelft.nl. hostmaster.tudelft.nl. 2024527513 36000 3600 2419200 3600"
            ],
            "CAA": [
                "0 issue \"sectigo.com\"",
                "0 issuewild \"harica.gr\"",
                "0 issue \"www.digicert.com\"",
                "0 iodef \"mailto:abuse@tudelft.nl\"",
                "0 issuemail \"harica.gr\"",
                "0 issue \"awstrust.com\"",
                "0 issue \"pki.goog\"",
                "0 issue \"amazontrust.com\"",
                "0 issue \"harica.gr\"",
                "0 issue \"amazon.com\"",
                "0 issue \"letsencrypt.org\"",
                "0 issue \"amazonaws.com\""
            ],
            "DS": [
                "58121 8 2 3C1CA6A6E37B56E628186ED991750682B8476915EAB7963D329309E8 97BAF49E"
            ],
            "DNSKEY": [
                "256 3 8 AwEAAeFz0BL4NMQgg3eIvKk3gnvh5AA4f/eB4xGN7MPiwkT7s/WllqLY 9KZrvHApAq6pC9sNuk6eFvoNeWb1NVHjOuEGuKeDejtJZ2mXo9XVGR1z FqHQOIOXjcaNtlruv4J7ctQaSYdBJXIajltdla2tDdFmKePh20i3CujU g8FktEFF",
                "256 3 8 AwEAAeCcqPXDPxCBgZadkc02nYlZKQccevGACbh8wRJdmRGgzZIHT9QJ ZWugwPUqh1me//AYI6iqZj5WqKIbRPBS6ANwizGr45C/Eq34mPppPGDr /cszLgwAKnAK8OgGVs80WHMfCommNVs9Z9bNgRR59KQ3Sg3qqD/DCRz/ be1McMoT",
                "256 3 8 AwEAAa4wpsHdi1kpmjTLFf0EvKXJU5Ctau/BhYcRO3gFEnJ0TiIIcbb4 oFCXB5Y9uTJcQ+j8FA8UbkQ0FON+PvyQcL+kaLY6SwJnf/OJA1qTQk+A gRu3WnZp4QXtFSAokE1Q0beWMJNw7P6O3p9zRO0xs1itT+zPNs9Rlw4R Z0lEz/8z",
                "257 3 8 AwEAAc1+rmVTGuAp+dno+QuwpNO9gST4VdT3QyqtU1hzh8kfW3sUXXfO Ni28ugqJtS/uKvGU4n73PVZ7Bh4JIt6v6E4ZTBVTTBt4WyM+mumYUBbh 6LRYbPkzWHTh4Yb0kfcvgXN6wZoMJiBw7nzz/zLz+U5i+XfeET3Du0LH l9zdhb2x+zZOc4FnQDgntEo/f1EVGatqzh0AtvhgOqWYX7TUYNZQHO26 YbAl+CchChx3NJTNvnbhvs/1cBBUKSaes4Li+F0bjlgtpd1ZBvb1bogr NllGpLYtRqU2qc2Y6KWa5OrIhJsy0nkwaKzvjgJoUeHR5NsADXUiZb0U v8tXwtA8U8E="
            ],
            "RRSIG": [
                "SOA 8 2 3600 20260813012615 20260809002615 19789 tudelft.nl. k5kmS8jZWva458BJcwnsVZp86EU9eJsfIZsJBa9wNeaPRlNo6hkpgiTm 9Rc2++OpCyMPcuqaniwCPRjcH/6Gi3cgehZH3zcSlED8sPIBXBeDiQlN 5UCrn8NlFIW69upVjqC2/eSIqg51mYYt853okBi3ZUVXLWx1ofEfEruh keo=",
                "TXT 8 2 3600 20260812210316 20260808210128 19789 tudelft.nl. VOD1gre78nyWxnHjqsLm7u9IuGaO+XEaE3aUz/gVv3+b8CecrklnyfKp LYbMMu4UDcPHQwHy1bUe6/UuCkiyhX0k60Uyeyr994BP8GTg9Tua3jH3 QjsZBWuFBOqd5FF9PFDd530MtJmmMvKK7RbwSlr14Xc4wvsIrKVLWlhU E8Q=",
                "MX 8 2 3600 20260812192429 20260808190844 19789 tudelft.nl. PW3axdkn5tY98yun1hFZLUHEtc3b5d5KfPSCct6lOUY+McVtf7MebT67 U72ywoiaxJk1JRDuJkgpTZjwmKxKxWZk0VjHFSVmGr8TW6qUKkm5P+l9 XHM/8sasdIBSm3R+myCEY/JBu3CymU3ab/TVICZb7sJJs29OCvmMhd2p Mg8=",
                "DS 13 2 3600 20260904094352 20260807140754 467 nl. f+6lksGG0AUIqxVtnyztvPNofCNH7kS0cJg/XInJSIy1ZnU0wvFCLvBx 7Am8HcnwIDQQBXu8dx8WtIgNKQS/FQ==",
                "CAA 8 2 3600 20260812185242 20260808185137 19789 tudelft.nl. SvszCj/itelZW+f0/vp7SuzPli5UFKMe8xuMRFo7xOE93hgXhivpjJ4S EMfUtwMChcljaFIkYIWfdyht1S6AXjEVysOgOHYaCvxQix0Us3TBKsOQ bArqRPia0eFXXXWAgDBTokTQZtzP+YivLxGoWQpxQNwyr04eF9wig8/O vlI="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "130.161.128.82"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 ip4:130.161.131.0/24 ip4:131.180.77.44 ip4:52.59.111.152 include:spf.protection.outlook.com ip4:46.31.188.52 ip4:212.83.209.198 ip4:212.83.209.204 include:spf.afas.online ip4:94.143.211.206 ip4:94.143.211.207 include:spf.recruitmail.com ip4:46.31.48.0/21 include:spf.topdesk.net include:spf.faqtory.nl include:a._spf.brightspace.com ip4:136.144.199.28 ip4:136.144.226.32 ip4:77.74.54.216 ip4:213.206.232.0/27 ip4:185.136.64.128/27 ip4:185.136.65.128/27 include:spf-x-tudelft-nl.dataduiker.app ~all",
        "dmarc": "v=DMARC1; p=reject; rua=mailto:dmarc-reports@tudelft.nl; ruf=mailto:dmarc-reports@tudelft.nl",
        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.tudelft.nl",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAydGx3k214wjqhdf5OBZqkEXhZgHJ70m0Lfi8orpvf2NEExvyQMHCKCeYW1Qpq07VIn+hlhu2AiLP9Uo/mCuS/csQR+Q9OAh7FXEkAYop7/sW22xekoGVVkqZn3nBnp5/epok2axFNM4OIXFm1/82fXyhke9IXtCwAshL7MPodqmWrFQ8rFOfhtYJL/RiGZFmDrNikZqSGwPKuWRJc6pml4fMmh7atUu2Qht3cB3Yxp/wBS/PV0VKEV+G0sWAP9IdMlEHOR80vtb/Er1aqnSwElyVL5ecU8sHDpqXsTAk7pIBA84C38EpxvpSgSX8Yfgf1LlBdBPDnW/56MY/rk55bQIDAQAB;",
        "spf_analysis": {
            "valid": true,
            "lookups": 7,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "tudelft.nl",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "130.161.128.82"
                    ],
                    "time_ms": 190.23
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "130.161.128.82"
                    ],
                    "time_ms": 153.83
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "130.161.128.82"
                    ],
                    "time_ms": 148.19
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "130.161.128.82"
                    ],
                    "time_ms": 955.1
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "130.161.128.82"
                    ],
                    "time_ms": 140.89
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Hellenic Academic and Research Institutions CA",
        "subject": "tudelft.nl",
        "valid_from": "2026-07-23T09:55:59-05:00",
        "valid_to": "2027-02-07T08:55:58-06:00",
        "days_remaining": 182,
        "san": [
            "tudelft.nl"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://www.tudelft.nl/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "content-length": "0",
            "location": "https://www.tudelft.nl/",
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