{
    "ok": true,
    "domain": "cityu.edu.hk",
    "generated_at": "2026-08-09T00:57:55-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 76,
        "label": "Good",
        "categories": {
            "dns": 70,
            "mail": 90,
            "security": 65,
            "network": 35,
            "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": "2 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": 0,
                "lost_points": 15,
                "detail": "Both DS and DNSKEY are required."
            },
            {
                "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": 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": "50 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": 0,
                "lost_points": 30,
                "detail": "PTR not detected."
            },
            {
                "category": "network",
                "title": "IPv4 diversity",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0,
                "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": "2 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": "error",
                "title": "DNSSEC chain",
                "detail": "Both DS and DNSKEY are required.",
                "category": "dns",
                "max_points": 15,
                "earned_points": 0,
                "lost_points": 15
            },
            {
                "level": "error",
                "title": "CAA policy",
                "detail": "Certificate authority restriction.",
                "category": "dns",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "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": "50 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": "error",
                "title": "PTR reverse DNS",
                "detail": "PTR not detected.",
                "category": "network",
                "max_points": 30,
                "earned_points": 0,
                "lost_points": 30
            },
            {
                "level": "ok",
                "title": "IPv4 diversity",
                "detail": "Two or more IPv4 addresses receive full points.",
                "category": "network",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0
            },
            {
                "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": [
                "45.60.197.218",
                "45.60.199.218"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
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                "10 mxa-005f2502.gslb.pphosted.com.",
                "10 mxb-005f2502.gslb.pphosted.com."
            ],
            "TXT": [
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                "\"amazonses:0TS3rG/hobLmR+RP2AGHDUgg9dZ6fg4QhpSsEfI+EJM=\"",
                "\"google-site-verification=-0SIQgoyTJ3qCX21Ocb2ejQAq4mgHRPAxaPObnkFH9M\"",
                "\"v=spf1 ip4:144.214.13.56/29 ip4:144.214.13.69 ip4:144.214.13.70 ip4:144.214.234.13 ip4:49.213.3.162 ip4:205.220.184.176 ip4:185.183.31.206 ip4:144.214.234.28 ip4:144.214.234.42 include:spf.protection.outlook.com include:spf-ap.exlibrisgroup.com \" \"include:servers.mcsv.net include:_spf.google.com include:_spf.qp-mail.com include:mailokta.cityu.edu.hk a:d.spf.service-now.com include:_spf.explore-blue.com -all\"",
                "\"MS=ms78848552\"",
                "\"google-site-verification=Ms0I2YEeqDKt9ZZ-rnGDERY7C4xsAe5JdufLM5ThcyY\"",
                "\"google-site-verification=4nCyqRixtzkWCVIfzZYY-dHl7zcZcQ9jX_xOOw_9e0I\"",
                "\"adobe-idp-site-verification=0b76b3def9dacf1cea663f457e4596bb0b2c5109bb619c95679b14ec571d19a8\"",
                "\"d365mktkey=1to60zloe8xzhjy7vq2nska7u\"",
                "\"apple-domain-verification=b6AhZ831f051pKNs\"",
                "\"Foxit-domain-verification=bf2fc1dbbebdfb81f06b37ba15833d1c\"",
                "\"MS=ms15060766\"",
                "\"globalsign-domain-verification=15279D02B60011B9EF5B52DB7BF7ECD1\""
            ],
            "NS": [
                "ns4.gdnsec.com.",
                "ns7.gdnsec.net.",
                "vax.cityu.edu.hk.",
                "ddi-cms1.its.cityu.edu.hk.",
                "cpccux0.cityu.edu.hk."
            ],
            "SOA": [
                "ddi-cms1.its.cityu.edu.hk. dnr-adm.cityu.edu.hk. 3008107996 1800 600 3600000 900"
            ],
            "CAA": [],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "45.60.197.218",
            "45.60.199.218"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 ip4:144.214.13.56/29 ip4:144.214.13.69 ip4:144.214.13.70 ip4:144.214.234.13 ip4:49.213.3.162 ip4:205.220.184.176 ip4:185.183.31.206 ip4:144.214.234.28 ip4:144.214.234.42 include:spf.protection.outlook.com include:spf-ap.exlibrisgroup.com include:servers.mcsv.net include:_spf.google.com include:_spf.qp-mail.com include:mailokta.cityu.edu.hk a:d.spf.service-now.com include:_spf.explore-blue.com -all",
        "dmarc": "v=DMARC1; p=none; rua=mailto:m365admin@cityu.edu.hk",
        "dkim_selector": "selector1",
        "dkim_host": "selector1._domainkey.cityu.edu.hk",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4Cf038rmKcUaCaLa9ViAkH2iDdTzDg/V/+39CINyF0YvvOf5A8cLmK+BHRBVHdQ+PoLu48OoFG38puZINU8V3Q6z4reavNdqpzR2QD1V1j8PwjhoM+IQvUUIC0SDCq0wqMlFHSdrbZD5+ZQPXEkOZmTuaCth7T/19n4T0UWH1V7u7Eq1DRPUGA+KrahDAmdUy6bmEaU2n/ciz12DurC0CPdgVjsd1AwG3m3eT25KLXWAEB4KF62goOo53IFwYSIY1uH91J4aYOAWI/4c2REBLte6Q9LFlZp7Htb15TDMtKmwsgaIhBz+BCfBAMTmJfo8+5GfT2tsEupntUR09idpvQIDAQAB;",
        "spf_analysis": {
            "valid": true,
            "lookups": 8,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "none"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
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                        "45.60.199.218"
                    ],
                    "time_ms": 51.45
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
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                        "45.60.199.218"
                    ],
                    "time_ms": 257.45
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                        "45.60.199.218"
                    ],
                    "time_ms": 234.77
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "45.60.197.218",
                        "45.60.199.218"
                    ],
                    "time_ms": 294.95
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
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                        "45.60.199.218"
                    ],
                    "time_ms": 490.65
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "GlobalSign nv-sa",
        "subject": "imperva.com",
        "valid_from": "2026-06-30T07:36:15-05:00",
        "valid_to": "2026-09-28T07:36:15-05:00",
        "days_remaining": 50,
        "san": [
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            "*.acim.cityu.edu.hk",
            "*.hktech300.cityu.edu.hk",
            "*.is.cityu.edu.hk",
            "cityu.edu.hk",
            "*.lt.cityu.edu.hk",
            "*.bme.cityu.edu.hk",
            "*.aro.cityu.edu.hk",
            "*.elc.cityu.edu.hk",
            "*.its.cityu.edu.hk",
            "*.sys0.cityu.edu.hk",
            "*.ds.cityu.edu.hk",
            "*.en.cityu.edu.hk",
            "*.lodge.cityu.edu.hk",
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            "imperva.com",
            "*.ccr.cityu.edu.hk",
            "shib.csc.cityu.edu.hk",
            "*.lib.cityu.edu.hk",
            "*.cityu.edu.hk",
            "*.sdsc.cityu.edu.hk",
            "*.cityu.hk",
            "*.ias.cityu.edu.hk",
            "*.csc.cityu.edu.hk",
            "rim.lib.cityu.edu.hk",
            "*.vpce.cityu.edu.hk",
            "*.fo.cityu.edu.hk",
            "weblab.com.cityu.edu.hk",
            "*.hkias.cityu.edu.hk",
            "*.svie.cityu.edu.hk",
            "*.cb.cityu.edu.hk",
            "*.ciro.cityu.edu.hk",
            "scope.edu",
            "*.ad.cityu.edu.hk",
            "*.cah.cityu.edu.hk",
            "*.esu.cityu.edu.hk",
            "*.sds.cityu.edu.hk",
            "*.scope.edu",
            "*.ted.cityu.edu.hk",
            "*.scm.cityu.edu.hk",
            "*.cc.cityu.edu.hk"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
    },
    "http": {
        "url": "https://cityu.edu.hk/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "content-type": "text/html",
            "cache-control": "no-cache, no-store",
            "content-length": "212",
            "x-iinfo": "48-188616692-0 0NNN RT(1786255066895 108) q(0 -1 -1 1) r(0 -1) B10(4,289,0) U6",
            "set-cookie": "incap_ses_1025_3118155=wPb0KqdVP0ZIWscjGYg5DtoWeGoAAAAAnM+TC7t2cyRUUWaAqNo+3g==; path=/; Domain=.cityu.edu.hk"
        },
        "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://cityu.edu.hk/",
        "title": "",
        "description": "",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "45.60.197.218": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "45.60.199.218": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "smtp.cityu.edu.hk",
        "ports": [
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                "port": 25,
                "open": false,
                "time_ms": 48.3,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4066.1,
                "banner": "",
                "error": "Connection timed out"
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                "port": 587,
                "open": false,
                "time_ms": 4068.7,
                "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",
        "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": 111.52
}