{
    "ok": true,
    "domain": "bu.edu",
    "generated_at": "2026-08-08T19:31:24-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 78,
        "label": "Good",
        "categories": {
            "dns": 75,
            "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": 0,
                "lost_points": 15,
                "detail": "Both DS and DNSKEY are required."
            },
            {
                "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": "2 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",
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                "earned_points": 55,
                "lost_points": 0,
                "detail": "192 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: bu.edu"
            },
            {
                "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": "error",
                "title": "DNSSEC chain",
                "detail": "Both DS and DNSKEY are required.",
                "category": "dns",
                "max_points": 15,
                "earned_points": 0,
                "lost_points": 15
            },
            {
                "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": "2 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": "192 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: bu.edu",
                "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": [
                "128.197.236.4"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "5 mx2.hc2706-39.iphmx.com.",
                "5 mx1.hc2706-39.iphmx.com."
            ],
            "TXT": [
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                "\"TAILSCALE-xoPhMaCbCi2oAgNoR6vU\"",
                "\"KP949W92GKNQ0PZ0N88XHLBEWBWBY5ME4Y9319Q9J\"",
                "\"google-site-verification=qM8eaHJfQH86-_P7YBYXq_yUIgourW2SlrR_KJr8dVY\"",
                "\"atlassian-domain-verification=aUzHV7Znf5W7zM9iKWIuXmQL2n3xyjLnhzctpiQ1dRDMXAAdF9wAGfQduOBpU2Jl\"",
                "\"apple-domain-verification=xbZoF0D4CQePMvfj\"",
                "\"d365mktkey=M0OxizdtVNcUWXZe3yNtSjfsCAM2ye8yfml9rfIR8vYx\"",
                "\"miro-verification=377cc6659a02c6725b563adc7e39e17eaee09eb3\"",
                "\"anthropic-domain-verification-naf36v=CEFZVHy1jQpWLrBBoNOxVc9F5\"",
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                "\"pardot192822=e95b76f60f1f2dd27c11ef306f99d5472c871da9d221b2a08db5fecb618af01a\"",
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                "\"e2ma-verification=0wegb\"",
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                "\"v=verifydomain MS=ms74687773\"",
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                "\"dropbox-domain-verification=z6zza3wyksbx\"",
                "\"identrust_validation=izRYplfXjj09O/sui/WvwGSZTi4MCrQ93v8yc3gyqrYl\"",
                "\"google-site-verification=7DoOKBD8dD53G3N4o-I5jUbG_qjDxTSuZExk4p1qlY0\"",
                "\"amazonses:AwSvDmWwTx8okcatFIEnWSnq20Z9LPfd6DRCIh1vFJs=\"",
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                "\"v=verifydomain MS=ms17551242\"",
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                "\"brevo-code:956c0e08c148a9770622045342757477\"",
                "\"yahoo-verification-key=A3O9VJ94l+a2frns/isnh9MBwLfPwVeMBgdvOb2l978=\"",
                "\"d365mktkey=7qsGu1xt2piBD6R1Tywzn8SVLsatn3NuB9MR5WReZ0ox\"",
                "\"openai-domain-verification=dv-jqEdCiOFLvqVPwoC3PcpCjU3\"",
                "\"google-site-verification=xmeyfQgB5dDMamBVUQr_BuUpNpqimItoXEKJ7aikqWI\"",
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                "\"ZOOM_verify_yhxVUDjfdOc4LiPKGmrwOZ\""
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            "NS": [
                "edns02.bu.edu.",
                "edns01.bu.edu.",
                "edns03.bu.edu."
            ],
            "SOA": [
                "dns02.bu.edu. hostmaster.bu.edu. 970870298 600 300 604800 600"
            ],
            "CAA": [
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                "0 issue \"sectigo.com\"",
                "0 issuewild \"amazon.com\"",
                "0 issue \"letsencrypt.org\"",
                "0 issue \"emsign.com\"",
                "0 issuewild \"sectigo.com\"",
                "0 issuewild \"digicert.com\"",
                "0 issue \"amazon.com\"",
                "0 issue \"digicert.com\"",
                "0 issue \"identrust.com\""
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            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
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        ],
        "ipv6": []
    },
    "mail": {
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        "dkim_host": "selector1._domainkey.bu.edu",
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        "spf_analysis": {
            "valid": true,
            "lookups": 2,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "bu.edu",
        "propagation": {
            "consistent": true,
            "results": [
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                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
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                    ],
                    "time_ms": 47.41
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
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                    ],
                    "time_ms": 93.31
                },
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                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                    "time_ms": 80.39
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                    "provider": "OpenDNS",
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                    "result": [
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                    ],
                    "time_ms": 47.09
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                {
                    "provider": "AdGuard",
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                    "result": [
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                    ],
                    "time_ms": 73.73
                }
            ]
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    },
    "ssl": {
        "available": true,
        "issuer": "Sectigo Limited",
        "subject": "www.bu.edu",
        "valid_from": "2026-02-16T18:00:00-06:00",
        "valid_to": "2027-02-17T17:59:59-06:00",
        "days_remaining": 192,
        "san": [
            "www.bu.edu",
            "bu.edu"
        ],
        "protocol": "TLSv1.2",
        "cipher": "ECDHE-RSA-AES128-GCM-SHA256"
    },
    "http": {
        "url": "https://www.bu.edu/",
        "status": "HTTP/1.1 200 OK",
        "http_version": "2",
        "headers": {
            "location": "https://www.bu.edu/",
            "server": "nginx/1.18.0",
            "connection": "close",
            "content-length": "142462",
            "content-type": "text/html",
            "date": "Sun, 09 Aug 2026 00:31:19 GMT",
            "x-upstream": "aws_home",
            "last-modified": "Sun, 09 Aug 2026 00:25:11 GMT",
            "etag": "\"9d4b010f890252bf30c0f254c12d4b6e\"",
            "cache-control": "max-age=1800",
            "x-backend": "aws_home",
            "x-cache": "Miss from cloudfront",
            "via": "1.1 de7cd9b43a97e50ea8a03d3c33d1470a.cloudfront.net (CloudFront)",
            "x-amz-cf-pop": "ORD58-P9",
            "x-amz-cf-id": "0BQmhSTch8R3clE-EqUn5O8kHlK_WKd3HSXtbJdewuPnogqCgDdF_Q=="
        },
        "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": "nginx/1.18.0",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.bu.edu/",
        "title": "Homepage | Boston University",
        "description": "Boston University is a leading private research institution with two primary campuses in the heart of Boston and programs around the world.",
        "success": true,
        "error": "",
        "status": 206
    },
    "network": {
        "128.197.236.4": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "mx2.hc2706-39.iphmx.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 1.3,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4029,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 796.2,
                "banner": "",
                "error": "Connection refused"
            }
        ]
    },
    "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": 82.68
}