{
    "ok": true,
    "domain": "utl.pt",
    "generated_at": "2026-08-10T10:56:11-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 24,
        "label": "Critical",
        "categories": {
            "dns": 45,
            "mail": 45,
            "security": 0,
            "network": 0,
            "availability": 20
        },
        "category_weights": {
            "dns": 25,
            "mail": 20,
            "security": 25,
            "network": 10,
            "availability": 20
        },
        "items": [
            {
                "category": "dns",
                "title": "IPv4 (A)",
                "max_points": 30,
                "earned_points": 0,
                "lost_points": 30,
                "detail": "0 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": "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": 0,
                "lost_points": 5,
                "detail": "Certificate authority restriction."
            },
            {
                "category": "dns",
                "title": "DNS propagation",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10,
                "detail": "Agreement between public resolvers."
            },
            {
                "category": "mail",
                "title": "MX records",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0,
                "detail": "4 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": 0,
                "lost_points": 25,
                "detail": "DMARC policy not found."
            },
            {
                "category": "mail",
                "title": "DKIM",
                "max_points": 20,
                "earned_points": 0,
                "lost_points": 20,
                "detail": "No tested DKIM selector responded."
            },
            {
                "category": "mail",
                "title": "MTA-STS",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "Mail transport policy."
            },
            {
                "category": "mail",
                "title": "TLS-RPT",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "TLS reporting policy."
            },
            {
                "category": "security",
                "title": "Valid TLS certificate",
                "max_points": 55,
                "earned_points": 0,
                "lost_points": 55,
                "detail": "No valid certificate was retrieved."
            },
            {
                "category": "security",
                "title": "Certificate lifetime",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10,
                "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": 0,
                "lost_points": 30,
                "detail": "PTR not detected."
            },
            {
                "category": "network",
                "title": "IPv4 diversity",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35,
                "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": 0,
                "lost_points": 40,
                "detail": "At least one address family must resolve."
            },
            {
                "category": "availability",
                "title": "HTTP response",
                "max_points": 40,
                "earned_points": 0,
                "lost_points": 40,
                "detail": "No successful HTTP response."
            },
            {
                "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": "error",
                "title": "IPv4 (A)",
                "detail": "0 IPv4 address(es) detected.",
                "category": "dns",
                "max_points": 30,
                "earned_points": 0,
                "lost_points": 30
            },
            {
                "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": "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": "error",
                "title": "CAA policy",
                "detail": "Certificate authority restriction.",
                "category": "dns",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "error",
                "title": "DNS propagation",
                "detail": "Agreement between public resolvers.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10
            },
            {
                "level": "ok",
                "title": "MX records",
                "detail": "4 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": "error",
                "title": "DMARC",
                "detail": "DMARC policy not found.",
                "category": "mail",
                "max_points": 25,
                "earned_points": 0,
                "lost_points": 25
            },
            {
                "level": "error",
                "title": "DKIM",
                "detail": "No tested DKIM selector responded.",
                "category": "mail",
                "max_points": 20,
                "earned_points": 0,
                "lost_points": 20
            },
            {
                "level": "error",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "error",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "error",
                "title": "Valid TLS certificate",
                "detail": "No valid certificate was retrieved.",
                "category": "security",
                "max_points": 55,
                "earned_points": 0,
                "lost_points": 55
            },
            {
                "level": "error",
                "title": "Certificate lifetime",
                "detail": "Full points require at least 30 days remaining.",
                "category": "security",
                "max_points": 10,
                "earned_points": 0,
                "lost_points": 10
            },
            {
                "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": "error",
                "title": "PTR reverse DNS",
                "detail": "PTR not detected.",
                "category": "network",
                "max_points": 30,
                "earned_points": 0,
                "lost_points": 30
            },
            {
                "level": "error",
                "title": "IPv4 diversity",
                "detail": "Two or more IPv4 addresses receive full points.",
                "category": "network",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "level": "error",
                "title": "IPv6 connectivity",
                "detail": "AAAA availability.",
                "category": "network",
                "max_points": 35,
                "earned_points": 0,
                "lost_points": 35
            },
            {
                "level": "error",
                "title": "DNS resolution",
                "detail": "At least one address family must resolve.",
                "category": "availability",
                "max_points": 40,
                "earned_points": 0,
                "lost_points": 40
            },
            {
                "level": "error",
                "title": "HTTP response",
                "detail": "No successful HTTP response.",
                "category": "availability",
                "max_points": 40,
                "earned_points": 0,
                "lost_points": 40
            },
            {
                "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": [],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "150 mx24.ulisboa.pt.",
                "150 mx23.ulisboa.pt.",
                "150 mx22.ulisboa.pt.",
                "150 mx21.ulisboa.pt."
            ],
            "TXT": [
                "\"HARICA-GWohQgu5VIsjbaqWjeN\"",
                "\"v=spf1 a:mx21.ulisboa.pt a:mx22.ulisboa.pt a:mx23.ulisboa.pt a:mx24.ulisboa.pt include:ulisboa.pt a ip4:193.137.196.67 ip6:2001:690:a00:1036::67 -all\"",
                "\"Antiga UTL\"",
                "\"Universidade de Lisboa\""
            ],
            "NS": [
                "ns1.tecnico.ulisboa.pt.",
                "b.ul.pt.",
                "ns2.tecnico.ulisboa.pt.",
                "a.ul.pt."
            ],
            "SOA": [
                "a.ul.pt. sistemas.reitoria.ulisboa.pt. 2026031718 7200 1800 604800 3600"
            ],
            "CAA": [],
            "DS": [
                "31071 10 2 E721525A75A5E2EB178A0AA670D05283523371C68991C38E3A7776F2 663E1215",
                "31071 10 1 A76FCA6B6D0AF304FE0A41D6555597C9F85F0384"
            ],
            "DNSKEY": [
                "256 3 10 AwEAAcNxKNU5QkbJnF5oFaIAMw7kOoPZ51DATB1CzkL8KCD2fZ6Cz0X6 OJOIo5Cp62ciTwVAchTmifnldLT4Cyxbj0MvyMWD4atWpY30qpZOoN98 NfxEyio1F3hCIi0h5JXa7rrGvn9XfFidfJ7q+ugwUH+K7EIRRiFpDTIg aclsmWACyAIck1CaVP47gqzFR5sS20kVooDPhp4yHOv8iy9rkGDUEmfk touprB0N4IfH85PlybM0IhNgo5mUkjST/EiGFyyRtuLVzgnzpMZj8E4Y QWBeZi2q1ney0dBgxBdon1StJeRnIporKIlAuOTP8oi1di8zjGBcgSfE 7SWf76UaIO8=",
                "257 3 10 AwEAAaFResGr60tRJCRVLa06mBHGi9iF3+jZbbGIs4xNsDJd62cve3yy D3rpi/OK6aRWOBNyGNHYlMvGAqDFkriwVPqVyNeGp+IcccFBOrYg1kd2 HwgbssvXFKmcd60II8hGj81aaf+mVhtzGU+pItH1m5WLzkdXyXiB/D4w vTg24PIIKkD+1yxFn7HD68edcm+a/VB3/YcZbwWNm6F2BJPx9sKb3q7K CfCBU/AwF9A1V3ld1k95q7uEcqdiXf5RmGIgkk3LvIlNear7x3OisZr+ 7Nq4V2kRqMhTDphmeJ2Km8/tLEl8Kou+y9wn8+qXSWSzuQOKwnPFKWxP SrfpPhahSNN8ZOfw4SDN/sj99RpEpMLJPx9bagH/rfa5Awkm0N+rj38V Rv8E8IdGsdzBe17Dxl04WZxKbGlYvdIe4nHnPqy/3rx4CC2zhSWufEor Yl2pA53wqfBgpTjXw5okqsDeWbn1H8oeLfYMlIiTRkUgzO/IDYdyCj5P PZNDuyhCc9oanDa0T6FV4dLMZfEaNWSUx9dAhx2kfLiZaypsojN23uOc XY5AZzc0Qi4rYVUwD3YeMObgnKqSkyja67pxyecEGB1AllGEcT8MMed1 8t0iM9MgkYCAV+Qhm9NX/cbMOFOeSY7zCavjkczHaO3fNvoE0LbQcmQA mrpKJbXVuTVsklPB"
            ],
            "RRSIG": [
                "NS 10 2 3600 20260907010201 20260808010201 8555 utl.pt. jH1XbiisBVT6zJmUx0ZQ05ppvlFK9b8EP9VMFpb0Jk+rPS+dAFfkgwMs C2pz9zmqAJ92W5L5H6HrD5/WNKKm4+101s1U/HRzKJAiNoVNr/bX6nMr QjUiIfj/29h6WIVymOBVxBxOHFF7miy+v/G/InCvffzykH5o3lh71+CI TqWPVbqhTDZgz9MDp3E7tRSLL4w9filwc5H0eOKtZ5K8kbcm68HdNGpy cJKUdwKjvI+EjVU/tPlLzqd/5AdwVVSRs/k2cORRnrzQYSODeJDf1he/ vUaxNdqwHvc6Gh2klz9vvZ8z9WkKhkFTfvatR0Uz4ATZHCY8qZtr6ewp 68rvmQ==",
                "DS 13 2 7200 20260820132023 20260810132023 30640 pt. VAWIECkM7Oth/zm1fHaq6YW1dQrkPk/+++RU0SzwmCQWtpIcnTl7672M 6K56N54o524dPbnBGlYi2KqylLOAQA=="
            ],
            "NSEC": [
                "_7e2aa765736bd2a68a649fa0f310693d.utl.pt. NS SOA MX TXT RRSIG NSEC DNSKEY"
            ],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 a:mx21.ulisboa.pt a:mx22.ulisboa.pt a:mx23.ulisboa.pt a:mx24.ulisboa.pt include:ulisboa.pt a ip4:193.137.196.67 ip6:2001:690:a00:1036::67 -all",
        "dmarc": "",
        "dkim_selector": "x",
        "dkim_host": "",
        "dkim": "",
        "spf_analysis": {
            "valid": true,
            "lookups": 6,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": false,
            "policy": ""
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": false,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [],
                    "time_ms": 1500.72
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [],
                    "time_ms": 651.29
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [],
                    "time_ms": 2081.02
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [],
                    "time_ms": 124.87
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [],
                    "time_ms": 145.74
                }
            ]
        }
    },
    "ssl": {
        "available": false,
        "issuer": "",
        "subject": "",
        "valid_from": "",
        "valid_to": "",
        "days_remaining": null,
        "san": [],
        "protocol": "",
        "cipher": "",
        "error": "php_network_getaddresses: getaddrinfo failed: No address associated with hostname"
    },
    "http": {
        "url": "https://utl.pt/",
        "status": "",
        "http_version": "0",
        "headers": [],
        "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": "",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://utl.pt/",
        "title": "",
        "description": "",
        "success": false,
        "error": "Could not resolve host: utl.pt"
    },
    "network": [],
    "smtp": {
        "host": "mx24.ulisboa.pt",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 1.8,
                "banner": "",
                "error": "Network is unreachable"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 111.7,
                "banner": "",
                "error": "No connection"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 111.6,
                "banner": "220 mx24.ulisboa.pt ESMTP",
                "error": "No connection"
            }
        ]
    },
    "visitor": {
        "ip": "216.73.217.62",
        "reverse": "",
        "country": "",
        "country_code": "",
        "region": "",
        "city": "",
        "latitude": null,
        "longitude": null,
        "isp": "",
        "organization": "",
        "asn": "",
        "timezone": "",
        "browser": "Other",
        "os": "Other",
        "language": "",
        "user_agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
        "is_bot": true,
        "cloudflare": false
    },
    "analysis_time_ms": 121.4
}