{
    "ok": true,
    "domain": "uni-bielefeld.de",
    "generated_at": "2026-08-09T07:22:53-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 82,
        "label": "Good",
        "categories": {
            "dns": 90,
            "mail": 90,
            "security": 65,
            "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": "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": "3 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": "93 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": 0,
                "lost_points": 35,
                "detail": "0 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: uni-bielefeld.de"
            },
            {
                "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/1.1 200 OK"
            },
            {
                "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": "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": "3 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": "93 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": "error",
                "title": "HTTP security headers",
                "detail": "0 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: uni-bielefeld.de",
                "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/1.1 200 OK",
                "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": [
                "129.70.240.4"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "50 a2631.mx.srv.dfn.de.",
                "50 c2631.mx.srv.dfn.de.",
                "50 b2631.mx.srv.dfn.de."
            ],
            "TXT": [
                "\"mindmanager-verification=c59b5cfe5aa2bef46104537a9486abf3237366c8074a1a14a3bf7843e5b2bf25\"",
                "\"google-site-verification=T5xNbHbPGhlsAAVo-jhf9bCnqHu--GISvf6fh4J2GDs\"",
                "\"sendinblue-code:a35d677f130498f670bd551fe31ae3f4\"",
                "\"apple-domain-verification=t4s8f87S8M1zYndy\"",
                "\"HARICA-CJElOZH7BDuodcd0Fhg\"",
                "\"adobe-idp-site-verification=3d1e550ccbef00ecf478dfb339156a49d8b78166961a42320ece2ed4a902fbcd\"",
                "\"MS=8764D5ABE038806624DD4192154D0344B26D3419\"",
                "\"v=spf1 ip4:129.70.4.0/24 ip4:129.70.204.0/24 ip4:129.70.208.0/24 ip4:129.70.43.192/26 include:spf.sendinblue.com include:_spf.o263.mx.srv.dfn.de include:amazonses.com ~all\""
            ],
            "NS": [
                "ns1.uni-bielefeld.de.",
                "ns2.uni-bielefeld.de.",
                "dns-2.dfn.de."
            ],
            "SOA": [
                "ns1.uni-bielefeld.de. hostmaster.uni-bielefeld.de. 803358033 10800 1800 2419200 3600"
            ],
            "CAA": [
                "0 issue \"letsencrypt.org\"",
                "0 issue \"sectigo.com\"",
                "0 iodef \"mailto:hostmaster@uni-bielefeld.de\"",
                "0 issue \"pki.dfn.de\"",
                "0 issue \"harica.gr\""
            ],
            "DS": [
                "7884 10 2 133B4A898DB8FAD4CA05B0BA4BEADA026CC52F88D54BE824CE7340B1 A6AAA3E5",
                "61267 10 2 D34A12872F52511D6E8B9C79260C339313AD306A36DAA459DF2F9EB1 1E034AF8"
            ],
            "DNSKEY": [
                "256 3 10 AwEAAbmwdhfoWQ/G5qswVm0+3IfOjkL1g04hXzHK2mBvT40Psh322z19 lyHztYchDLA+aDJOHZEfQZibcOY4FLgUuQ4/7fNtjq/fVi/l1AeygWzf AmPNxN2ZKz4BXMxk3y92m+/i40hQivv64qv/2WHz014H9VkaP1dEnueN skK/7lL5yCG4/So1VTZgEw8uOsonikIk/ePbImde77C/GJpC6Ip2Vczk L3s9MAR9SWD1ZFdtybCiASUYYrcNxWLv7svP1EYIFFpgsnjzZC/auTq7 dwNMCEULXCtI+9cMGidVRyq5A7Yx24sHkA/bHrPuvnhNLhCuqU+KPTK2 QDq4UoocKJk=",
                "257 3 10 AwEAAdh5UCJR1TS/5SuCsDDLJfBgq0rrWeJiE2p8Jg4g18xQ3q9cK0pr I7km2qxfdzj9BjrHZVkgy1D6+A+I0V06AI19E5Ekl6/XG1gvF3KAgGV1 jiraAQyHQ1IEYYFhD9uYJfJJEHsCTvLv9yA4a31TYIVHKwdI+ypSgfsj PmiqGN2HBN848ellCd3oIYzW8qw//5Qbw+bSrZ6DspU96NrO+3185g2w LcOCESk9g3UF2aTTi/IsB9yivgYvl9y4NOg/CEqZEDeWBA/GFwsR7N49 ZBT0WDR8EdcnZdwK92KLuc3pzGVfOMddg+lIXu6SctWpgumOsy/0cXkz ql01OByKAAE=",
                "256 3 10 AwEAAauEcT+YO6xQ3kSdttsjOTMM3it951Zh1vZrTYsgaOQKhPMuX1ki mGhr2UKOyF30Lwec6jzGKD5mCUouqh+8cpNpdaoUKamZnMy1R0cIYsP8 QmrOHkjMSEXAG/UIubVbCv8H5zpkKoxy/DDN1KJPBkhOiTDKviVJ+d6C /KtBElrehrmnAC6OoLlxKiic9MYgyvQksrLwzE/X8bbu+P7nxqwcc8/p KBULDtBgU4RXA4o1mNli7e9TWxsV/+ydW5wg+egiooLpTcy1TR4CUePF xsaY+0eRAqIICsMh9QU3YBJwdn1lHUtgrmpKSYA7Im/PepR3kf4qdrcG qI6wAn575N8="
            ],
            "RRSIG": [
                "DNSKEY 10 2 3540 20260812092858 20260805221323 61267 uni-bielefeld.de. U94Q/tHMSfsU+zs1dQy6k/CWlc4crhUVx3RCmqALIk5Px1XXbbEd6nzy KKXa0+ANKbTBkaI2CgeHZ/cub3iy0U0nZyX3nOUnOnvIfh+M6wJu09nE g++qsayqAvYWS2i5/dKDeB6k50v2hFI7eEMJOSSlBqUU0tovjm0q3G8q /o4rJs6N9rF4eKSQDgIkUAbEu3N5ASLSgr9PHJKRvxWhDjoO5dcTJS0f bb67RAJS8TGbLqL2s9i9+faZAmKpVtnhM3cdZy8cYjamwliD2cnEVwDw BpY62Kfy3e1q+/4lLyjrXj+LEEjdQfnjPTTZ4E79QGene4qUEFHjL5q8 Afps5Q==",
                "NS 10 2 86400 20260813015126 20260803014615 40838 uni-bielefeld.de. e1IXXnikUgAkQCXiEOwWbj1Ud+Hkb4rzEEiE9gz89qDqTZG/PvXFKwRd CGEyoYWSbzg3Cd/vVN9T9kj+ZeYrKKLRYmgGQmc6Fb/Mocz0wc0J1LaT XEb87L6LQe9K2xBVI/8zXBOigSP1hH+YbrjH25WcALABqKBRCoP7qP7c g8wBcIGRb72p/S3HqBls4UnBARnZ6F2cchn0bpu/pbF7CWqB2Hs3LWIf Wu/lX/OjjiuJ/5q9AEfsi7bJrvzzzDYriAih8huPyRfGc87SxDnT7653 EJ0wBM1vKddT8MxUN8x2ucnGgJHaFonEz8fojiMXck18mdR+Wyy5uSLA oO86xA==",
                "DS 8 2 86400 20260817120903 20260803103903 32911 de. PF5zLC0OIhCbOdTmJWIlVFg9kttuWTgmBDoaVookXGrWc9fmf0QBYvwf hgD3ZX9jVWNTMOEWRixP9U1v6KiJiFE0yVGwpbCNSwZq24lwp8mtJqs9 3QZ1I76WQ+5EqLaPdKE2fV8JfkeNODP2EtOIVwqrn9yHUnAvZMO626gK Dck="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [
                "100 10 \"s\" \"x-eduroam:radius.tls\" \"\" _radsec._tcp.eduroam.de."
            ],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "129.70.240.4"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 ip4:129.70.4.0/24 ip4:129.70.204.0/24 ip4:129.70.208.0/24 ip4:129.70.43.192/26 include:spf.sendinblue.com include:_spf.o263.mx.srv.dfn.de include:amazonses.com ~all",
        "dmarc": "v=DMARC1; p=none",
        "dkim_selector": "mail",
        "dkim_host": "mail._domainkey.uni-bielefeld.de",
        "dkim": "k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z+FApQ6ra2VsXfbJP3HE6wAO0YTVEJt1TmeczhEd2Jiz/fcabIISgXEdSpTYJhb0ct0VJRxcg4c8c7wIDAQAB",
        "spf_analysis": {
            "valid": true,
            "lookups": 3,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "uni-bielefeld.de",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "129.70.240.4"
                    ],
                    "time_ms": 44.65
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "129.70.240.4"
                    ],
                    "time_ms": 134.93
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "129.70.240.4"
                    ],
                    "time_ms": 24.29
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "129.70.240.4"
                    ],
                    "time_ms": 683.72
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "129.70.240.4"
                    ],
                    "time_ms": 168.83
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Hellenic Academic and Research Institutions CA",
        "subject": "www.uni-bielefeld.de",
        "valid_from": "2025-11-11T00:51:30-06:00",
        "valid_to": "2026-11-11T00:51:30-06:00",
        "days_remaining": 93,
        "san": [
            "www.uni-bielefeld.de",
            "uni-bielefeld.de",
            "wwwfo.uni-bielefeld.de"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
    },
    "http": {
        "url": "https://www.uni-bielefeld.de/",
        "status": "HTTP/1.1 200 OK",
        "http_version": "2",
        "headers": {
            "accept-ranges": "bytes",
            "server": "Roxen/6.1.248-r5",
            "vary": "*",
            "location": "https://www.uni-bielefeld.de/",
            "content-type": "text/html; charset=UTF-8",
            "content-length": "150162",
            "connection": "keep-alive",
            "date": "Sun, 09 Aug 2026 12:22:43 GMT",
            "last-modified": "Sun, 09 Aug 2026 12:22:43 GMT",
            "etag": "\"336f000c1c3f97cd189aa78b7eafce75\"",
            "expires": "Sat, 09 Aug 2025 06:22:43 GMT"
        },
        "security_checks": {
            "strict-transport-security": false,
            "content-security-policy": false,
            "x-content-type-options": false,
            "x-frame-options": false,
            "referrer-policy": false,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "Roxen/6.1.248-r5",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.uni-bielefeld.de/",
        "title": "Universität Bielefeld",
        "description": "Forschungsstark mit internationaler Ausrichtung und innvovativen Lehrkonzepten  ➤ Komm zur Uni Bielefeld",
        "success": true,
        "error": "",
        "status": 206
    },
    "network": {
        "129.70.240.4": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "a2631.mx.srv.dfn.de",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 114.2,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4010,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4123.5,
                "banner": "",
                "error": "Connection timed out"
            }
        ]
    },
    "visitor": {
        "ip": "216.73.217.62",
        "reverse": "",
        "country": "",
        "country_code": "",
        "region": "",
        "city": "",
        "latitude": null,
        "longitude": null,
        "isp": "",
        "organization": "",
        "asn": "",
        "timezone": "",
        "browser": "Other",
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