{
    "ok": true,
    "domain": "teamtreehouse.com",
    "generated_at": "2026-08-10T08:27:53-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 85,
        "label": "Good",
        "categories": {
            "dns": 75,
            "mail": 90,
            "security": 84,
            "network": 65,
            "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": "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": 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": "5 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": "82 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": 19,
                "lost_points": 16,
                "detail": "5 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: ec2-34-193-234-175.compute-1.amazonaws.com"
            },
            {
                "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": "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": "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": "5 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": "82 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": "5 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 19,
                "lost_points": 16
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: ec2-34-193-234-175.compute-1.amazonaws.com",
                "category": "network",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0
            },
            {
                "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": [
                "34.193.234.175",
                "18.206.116.173"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "10 aspmx.l.google.com.",
                "40 aspmx3.googlemail.com.",
                "20 alt2.aspmx.l.google.com.",
                "30 aspmx2.googlemail.com.",
                "20 alt1.aspmx.l.google.com."
            ],
            "TXT": [
                "\"v=spf1 include:_spf.google.com include:helpscoutemail.com include:servers.mcsv.net include:spf.mandrillapp.com include:zoho.com ip4:142.0.160.50/32 include:7320745.spf10.hubspotemail.net exists:%{i}._spf.mta.salesforce.com -all\"",
                "\"google-site-verification=gry2OoAsXMeGRyLmhhndx2c5TxFbvCqzUXR66_ZYMpc\"",
                "\"google-site-verification=0W3EHt8wRzgBZUT4_w_NwM50y4aNtXUIa95yEkB7hbg\""
            ],
            "NS": [
                "ns-1233.awsdns-26.org.",
                "ns-1567.awsdns-03.co.uk.",
                "ns-1004.awsdns-61.net.",
                "ns-334.awsdns-41.com."
            ],
            "SOA": [
                "ns-334.awsdns-41.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400"
            ],
            "CAA": [
                "0 issue \"digicert.com\"",
                "0 issue \"amazonaws.com\"",
                "0 issue \"globalsign.com\"",
                "0 issue \"awstrust.com\"",
                "0 issue \"amazon.com\"",
                "0 issue \"sectigo.com\"",
                "0 issue \"letsencrypt.org\"",
                "0 issue \"amazontrust.com\"",
                "0 iodef \"mailto:site-ops@teamtreehouse.com\"",
                "0 issue \"pki.goog\""
            ],
            "DS": [],
            "DNSKEY": [
                "256 3 13 qDSNP9i6H+Iimn8CfLVp1WPVJ1wp+oIa+lBoB4LCWzPWGq4adTA0b4WI p6fsCN5t95iIdfMzzNK1+ZE541cusA==",
                "257 3 13 yR4cAW17jj1vULYZ3Y+ayAKFfA0i5LdNLFiVS8MdI13eixSmsGxQFH5G j3oR4rHNSv7cyRyu1eQIf5Vz5LNWaQ==",
                "256 3 13 LRuzsDEqG/jAqn4sQnrr+Lxcw/Q2xIhEZ6oLnwjf4MfiXcj63liKvXEf 80Ef9SPy+HW3cHmCjmzL1wehsm7Vng=="
            ],
            "RRSIG": [
                "NS 13 2 172800 20260812142742 20260810122742 61606 teamtreehouse.com. 5EH5BOehilu7eE0wNHRlJFakabf9kc+u3a/k0EIW5vaTo0K+XgAJTLIZ Y25S91EYqXKbpXIfoKhf4m69FXIicA==",
                "CAA 13 2 300 20260810143242 20260810122742 61606 teamtreehouse.com. L+TreC6D9dwXk6OMx38Xf5VSBqDsTDddSm2PMuS3QhXYcmfRqxkVUeXQ kAlg9Q8MWj/qdmOkNaYBSTBvS1exRQ=="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "34.193.234.175",
            "18.206.116.173"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 include:_spf.google.com include:helpscoutemail.com include:servers.mcsv.net include:spf.mandrillapp.com include:zoho.com ip4:142.0.160.50/32 include:7320745.spf10.hubspotemail.net exists:%{i}._spf.mta.salesforce.com -all",
        "dmarc": "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-agg@teamtreehouse.com,mailto:dmarc_agg@vali.email; ruf=mailto:dmarc-for@teamtreehouse.com; rf=afrf; fo=1; ri=86400; adkim=r; aspf=r;",
        "dkim_selector": "google",
        "dkim_host": "google._domainkey.teamtreehouse.com",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvL83UOnKFEUyLqFm3/JoFCnBGU2Lu85Nj0qTsbei5313ng6w53P3KXioJHwlgoc+Z9JqqYVopICDkBRQcyryEbW8hQ94QBA4TTvBFJYmPAbyojidXZu97w6BWuN6NhPTd8N0a3OcecN4e2w5sehchuw718Z2wfmv5xuHgbcOj8w4RM/fuXkQG7c4afiFuScZ0HVWYCqQ1Rvx3E1TSkBSEkNE4+2wUc/bC8GkfjHIUs1TO0gVuKct+XS1qIjdH6/1BSZntr9RIZPlJQJhNIsC2gArdiHTTBoyrvZQ2tQKp8cCbOch5P5PxTei9FxyZD7YuqKlVvl3giE4MGWFvnqz3wIDAQAB",
        "spf_analysis": {
            "valid": true,
            "lookups": 7,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "ec2-34-193-234-175.compute-1.amazonaws.com",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "18.206.116.173",
                        "34.193.234.175"
                    ],
                    "time_ms": 59.59
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "18.206.116.173",
                        "34.193.234.175"
                    ],
                    "time_ms": 59.07
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "18.206.116.173",
                        "34.193.234.175"
                    ],
                    "time_ms": 43.36
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "18.206.116.173",
                        "34.193.234.175"
                    ],
                    "time_ms": 81.72
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "18.206.116.173",
                        "34.193.234.175"
                    ],
                    "time_ms": 56.56
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Amazon",
        "subject": "teamtreehouse.com",
        "valid_from": "2026-04-16T19:00:00-05:00",
        "valid_to": "2026-10-31T18:59:59-05:00",
        "days_remaining": 82,
        "san": [
            "teamtreehouse.com",
            "*.teamtreehouse.com"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
    },
    "http": {
        "url": "https://teamtreehouse.com/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "date": "Mon, 10 Aug 2026 13:27:44 GMT",
            "content-type": "text/html; charset=utf-8",
            "x-frame-options": "SAMEORIGIN",
            "x-xss-protection": "1; mode=block",
            "x-content-type-options": "nosniff",
            "x-download-options": "noopen",
            "x-permitted-cross-domain-policies": "none",
            "referrer-policy": "strict-origin-when-cross-origin",
            "etag": "W/\"26035b42856ed7cc410f559e9d333495\"",
            "cache-control": "max-age=0, private, must-revalidate",
            "content-security-policy": "frame-ancestors 'self'",
            "set-cookie": "_treehouse_session=27OWMdthCuI8D5VA%2FUfdmACS34A1alLhQUf3Ni6r4AMn%2Fy%2FcFygynzFl2XoOvaoxHZQl1QIoV3xpnULZBlMFLDk8x3h%2FM3o4uJIyOL6eNRqdSb9zj7lGsVttT3oTb1XT2u7pmUmYBu3GCQw6ZenyTVNXH34J2pvP1Jg7M0zMDPMhc0Xe5dpdP90m2DSKUK4rJhDAYwCZlC1SV2sdXhORWOIzZJoviGm897y6XkW6JFHFotm3oIYbp4%2FzR7XWFAG23caKqPo0SHXcadoWXIXEvN6FqOqUBQo%3D--DuAje5TqQ1F%2FJtsF--k%2F7zuGWnj3W8OFMqnE0d%2FA%3D%3D; path=/; secure; HttpOnly",
            "x-request-id": "3c4450e2-54a1-42ea-9007-3406ed6fd891",
            "x-runtime": "0.430585",
            "strict-transport-security": "max-age=0; includeSubDomains",
            "vary": "Origin"
        },
        "security_checks": {
            "strict-transport-security": true,
            "content-security-policy": true,
            "x-content-type-options": true,
            "x-frame-options": true,
            "referrer-policy": true,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://teamtreehouse.com/",
        "title": "Learn to Code Online with Treehouse | Guided Courses & Techdegree Bootcamps",
        "description": "Treehouse offers structured coding courses and Techdegree bootcamps in JavaScript, Python, HTML, CSS, AI, and more. Try 7 days free, then $25/month.",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "34.193.234.175": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "18.206.116.173": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "aspmx.l.google.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 21.8,
                "banner": "220 mx.google.com ESMTP 586e51a60fabf-459f1f68310si7895750fac.129 - gsmtp",
                "error": "No connection"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4020.8,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4019.9,
                "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": 121.85
}