{
    "ok": true,
    "domain": "vu.nl",
    "generated_at": "2026-08-09T01:23:49-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 84,
        "label": "Good",
        "categories": {
            "dns": 90,
            "mail": 100,
            "security": 77,
            "network": 20,
            "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": "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": 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": 5,
                "lost_points": 0,
                "detail": "TLS reporting policy."
            },
            {
                "category": "security",
                "title": "Valid TLS certificate",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0,
                "detail": "188 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": 0,
                "lost_points": 30,
                "detail": "PTR not detected."
            },
            {
                "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": "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": "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": "ok",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 5,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "Valid TLS certificate",
                "detail": "188 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": "error",
                "title": "PTR reverse DNS",
                "detail": "PTR not detected.",
                "category": "network",
                "max_points": 30,
                "earned_points": 0,
                "lost_points": 30
            },
            {
                "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": [
                "52.232.69.102"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "0 vu-nl.mail.protection.outlook.com."
            ],
            "TXT": [
                "\"cEePUaAdUpgbDwN8y+iChaM5q/fmwZ98byweLOwQQTzlfZ7ZqiRmUZy9plWcraR+SpUS7soZ99JhnT3uRkW0uA==\"",
                "\"apple-domain-verification=CQxBk5H2cH0MlovF\"",
                "\"Address: De Boelelaan 1105, 1081 HV Amsterdam\"",
                "\"ZOOM_verify_gOlFjB0bTXauhCZZfZ0SZA\"",
                "\"atlassian-domain-verification=4DKZByaje8L/OfqPKIBr9eFCxXWL7x17aQeSAH5OE0dv32q8PXT/ibb45DBX6h1T\"",
                "\"successfactors-site-verification=NDVmYTkwNzVjMjQ3NDgwYTRiNTZiYjM4YWY0MjUwNjE4NDE1NzAyYjVkZDAxYzU4ZDBkNWNiMjg5OTFkYTYxYg==\"",
                "\"bw=JD9O8B5T3N8rye1GFjQP5tlEtsH7SuVOiTWPxSNk67Kr\"",
                "\"facebook-domain-verification=z5lo4vme7tj7rz0rkrjeyw3ficdkrt\"",
                "\"Phone: +31 20 5985385\"",
                "\"MS=ms11195063\"",
                "\"OPE0067218\"",
                "\"google-site-verification=5wBwCtzHALiL0eFj_8LfcLtC9A0pwqF8ChcfKHGWeUg\"",
                "\"HO5Hae8DJUssBXMJPxF8SuoTVyO4suOdM/31NLC0WwA=\"",
                "\"HARICA-2AQWWJAqj5VSqkz0rOX\"",
                "\"935e51b8-957b-486c-bca0-52db87534023\"",
                "\"B8RKMH5ZV1ICEXRNIUXA04C1D4UXWARTPQE3T8PTL\"",
                "\"v=spf1 include:_spf.vu.nl  include:spf.protection.outlook.com include:_spf.x-com.nl include:spf.coachview.net include:outboundmail.blackbaud.net ip4:194.150.14.85 include:spf.formdesk.com ip4:89.146.30.0/27 ip4:213.144.242.0/28 ~all\"",
                "\"MS=ms33278211\"",
                "\"Vrije Universiteit Amsterdam\"",
                "\"jamf-site-verification=mTKqAuu3KFc2rfzUgyBWng\""
            ],
            "NS": [
                "new-ns2.vu.nl.",
                "new-ns1.vu.nl."
            ],
            "SOA": [
                "new-ns1.vu.nl. hostmaster.vu.nl. 2024274987 10800 1080 2419200 900"
            ],
            "CAA": [
                "0 issuewild \"harica.gr\"",
                "0 issue \"digicert.com\"",
                "0 iodef \"mailto:socc@vu.nl\"",
                "0 issue \"letsencrypt.org\"",
                "0 issue \"pki.goog; cansignhttpexchanges=yes\"",
                "0 issue \"harica.gr\""
            ],
            "DS": [
                "6004 8 2 00C977F596294AD09FAA33193439DBFD67CB0D24CF148692F051B247 F43B17B1",
                "64997 8 2 C4E1C107050AB567DFC7D4BE773D06096C1A20598AFF4C1A978700EF 333C913B"
            ],
            "DNSKEY": [
                "257 3 8 AwEAAaY1MvssCMZgxBitAQ9CZ/9v7mQ4ydePrNjBWvKBrf7OQxHfKGbX Y5hhTIDDNFv/ZxZXga7mvFCot+XtRhZcuwjIr6o/5zo0s2UbykR9+KGr ZAXDestydId9XFvVU5fba8XpbAAobITmABnSuZOlVVSSlW+V/L+dL43b ThHPlmADZ7pGfMeUV7bhcetRKT5FuIMJTk9ruv0t6jUg+l4mtxH/symd hl52n5jQxxfs7ta93hGC2HCwtBuQ82p9afEKUT0Zc6Txw8DO441ErDdT w1lrxdfIy8uEMWAzVJUp5aeO7xGmf/ZdsOh+uHzRnqntlHcy6rutkXv4 5ygAmbTpcek=",
                "256 3 8 AwEAAaBmz7nJsppO+w9L+y0EzTxe34LVTk/G55d8a1KTBAWwAw5m48op SpUoNCzqxA8T1tPEhTNy86buR5vopYtLXKwDRuuzkQSrWrdFRkN21T2Z /OGPtbE+PWmcnSec+1XVwpR4vRZNegmozO1AyEkj/T59sDMBU1jzEaPS gbwUAtd3",
                "256 3 8 AwEAAa+wfd9By11L+3+S7vRHyCRIawC+uTjwjfwYrRNPsrM/cCdlM6Rg dW30XBzw4pMxy2dyienGVJLbkGi6/MekoS3ft7/EHE9Yis7GkdpBhH4o mTctDdEbKy4GLqd5QK/stlKx4KUfjJpNCj1yhZS/GtDIp5hGm7yv1d+b 0Id3Q/Az",
                "257 3 8 AwEAAbehIeu/MrjMEEKyWKgRI9zlvd7nuGy5jo/e74H2CW3IH4wyRl+e YsznmX4ETZNxKT6UxyAQg/iqwgduztVxogtahj4hwvHRIYtug+o4vbU8 S4SIG9EPC8DNyRF92T9adpVLIpVz8hT7h5KVw40GeWfflBpHfPbF45Pi A0sKp8JEsyXmDtE8tSB9EzgqUmMJlUUiN00sOHaNreFrFzBg9m2V0pep NBgiQCLMfKBTEkQSiXNKeTsf3gjx/a0N+6HFu0tixBtaxs0i6MeA8/uG kIn2hDI6n1J6Kj7ow9ywlghL7+jJ1SQiPWdQLReUenYaWt/lQPR89XBC 5UjCXU5xO4M="
            ],
            "RRSIG": [
                "DNSKEY 8 2 172800 20260812230613 20260808221809 6004 vu.nl. cd+3mVez0IK2RLeVghgaO6m3EuwT/0Kmc/bYMgU8SEHNkfSintJyiqL1 AeOvAgCuWAEnEF9D4TPP/ltdORcwOGVAZZp9zWEmNXvkgNkR2fzyZkkC U5zqoUb6fjk/1BmjEAHbyVg/n7/wPrN7PJ74owMyi6sskjWroLwmDHlZ ODLYqqSn2LrcKe6/PwrOvhvQpbngEFHCoPnQKLeWA5ZCoqUJ+MYqx6jP uIO/7QKOqbW1qplj4qjnA1Z+psz7nFMfLSPDKV9cDy2qjNB7B9XnoKxY Wo4m6QSgviJoDJWw9A8alN3mD5y+uk6470nX0NE6PI6+UJMpfuyaVtP5 pY0Q6g==",
                "DNSKEY 8 2 172800 20260812230613 20260808221809 55425 vu.nl. g8H/GsxGcmFWxcMGI6A2dR2dY5GqH38PPYj2U4/9VWhDZzz6OulPNO2t RvwCxIsdqYHYLMheSP3c37h4Fg1mGQRTVSPo9Kes7BbHR+eLnowV/FSX 62rKXrpDUC0rSCHNvX0wOqj3S4PsNqkBLayFJIjo2dOSdqWOgoqeV8qt rLw=",
                "DNSKEY 8 2 172800 20260812230613 20260808221809 64997 vu.nl. m3Yn8swQbVMK3goiLfINlP8qgKxq51VB94KMgEDlWJr3Y9jULhdXKt5v u0Tk4JWi2Dkmirp9rQOGAbdlHZmy4VnXzqDpbaguDHggAtVewpTCAWy2 egkwjfoUtWVsLYyHrh/ztfnJdU/gfKBGJTuO8pOblnmcieU6W5thBh8c ITN0AV9+UnHlOIWFiFfuQpcEmVEc8X7QGGWgqs7aBYqCABae9OpoMm2H 4gGXSVTjySktA5oFjSaS+fzDEEnq4OBwmApT8eGU7SvJ+pboHTlRqx40 lPpDO52Dji+B3yec/kZEItl6r+iF1raZzD3jTZ2HmvIZtmymx3ktFsZg Vviv9g==",
                "TXT 8 2 60 20260812151915 20260808151617 55425 vu.nl. eOJWp1aITU3TeTn4ONlXNcPAEAgSNyrcnkgjaOxMEdzynTFvgBaCeXeH +UD+oXDWit6kcta0WDRA47xNg22r4ri/Lq2gtRk/xcPT6uZ5vnPwPRfk aWYism5C6weG2+qtBiO9ahJaIOfgO6GbsE77PHmxLjSoZYI3gYazQOJv 9hg=",
                "NS 8 2 28800 20260812151915 20260808151617 55425 vu.nl. levpJhETl8k32IPV3TKllP708+StsTsu1y0hcEGR9w7rVFenQlM8Oj8s 3hidsnCCryEcb0t+PEIrY75YJWOjqVL0BDeWdhYyl4ge5OfpK1sm+hDc Ulc6zdK50u47HGwDBKWzvGLhCnnEM5GOvQx/etby/3E8GpNOqEx0Uqbh 8w0=",
                "DS 13 2 3600 20260903124035 20260806200722 467 nl. FHn02XP/xHgjm8fTXLsAsAryptZk5+0ZWbQJ5RBd8IOLqzt56dD8Xwpe mKNDdk72rQkS+hvgUXPlXfh466Tqkg==",
                "MX 8 2 86400 20260812150316 20260808150307 55425 vu.nl. Arb3i04Ccx1JPhrtSmHTVsAXY2MCOitpdmmtWMSxB2PPeQ/FivnNEucy 0QmbxfHKfFNasDw+lrMNY+MDm2Y0Xj56Qz1Ga4kiJngBN+aRcpK+I089 c6GA2WM3EqbLrA2xt34+isz3+Khma90zS/ns4vGEXThWfMePKI36RinM AsY="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "52.232.69.102"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 include:_spf.vu.nl  include:spf.protection.outlook.com include:_spf.x-com.nl include:spf.coachview.net include:outboundmail.blackbaud.net ip4:194.150.14.85 include:spf.formdesk.com ip4:89.146.30.0/27 ip4:213.144.242.0/28 ~all",
        "dmarc": "v=DMARC1; p=quarantine; sp=quarantine; pct=100; rua=mailto:8e35bdd774d9724@rep.dmarcanalyzer.com; ruf=mailto:8e35bdd774d9724@for.dmarcanalyzer.com; fo=0:1:d:s;",
        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.vu.nl",
        "dkim": "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC9Gsq/XPYYxdtfH4SUf/qsDtw3aB4Hfm7s2NOXDMA+4DUFxBO1Yg84aSgI2H2+ABxRo4fzPXig79aWQ+oG9lt05bY934fFTQOG+lNv5Kr6fXl5yaRvMDJek5srJynaLspxVt8PtEVPXl/zTyvgjvm1zb6Apjjp6N55Oegz/6CoJwIDAQAB; n=1024,1449226675,1465037875",
        "spf_analysis": {
            "valid": true,
            "lookups": 6,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "quarantine"
        },
        "bimi": "",
        "mta_sts": "v=STSv1; id=20210625195700",
        "tls_rpt": "v=TLSRPTv1; rua=mailto:vu-t@tlsrpt.report-uri.com"
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "52.232.69.102"
                    ],
                    "time_ms": 173.21
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "52.232.69.102"
                    ],
                    "time_ms": 170.6
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "52.232.69.102"
                    ],
                    "time_ms": 143.68
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "52.232.69.102"
                    ],
                    "time_ms": 360.31
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "52.232.69.102"
                    ],
                    "time_ms": 129.59
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Hellenic Academic and Research Institutions CA",
        "subject": "vu.nl",
        "valid_from": "2026-07-29T23:57:45-05:00",
        "valid_to": "2027-02-13T22:57:44-06:00",
        "days_remaining": 188,
        "san": [
            "vu.nl",
            "www.vu.nl"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
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