{
    "ok": true,
    "domain": "italki.com",
    "generated_at": "2026-08-09T22:01:41-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 84,
        "label": "Good",
        "categories": {
            "dns": 75,
            "mail": 100,
            "security": 73,
            "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": "3 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": "8 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": 5,
                "lost_points": 0,
                "detail": "Mail transport policy."
            },
            {
                "category": "mail",
                "title": "TLS-RPT",
                "max_points": 5,
                "earned_points": 5,
                "lost_points": 0,
                "detail": "TLS reporting policy."
            },
            {
                "category": "security",
                "title": "Valid TLS certificate",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0,
                "detail": "154 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": 8,
                "lost_points": 27,
                "detail": "2 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: ec2-52-26-45-196.us-west-2.compute.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": "3 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": "8 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": "ok",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 5,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 5,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "Valid TLS certificate",
                "detail": "154 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": "2 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 8,
                "lost_points": 27
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: ec2-52-26-45-196.us-west-2.compute.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": [
                "52.26.45.196",
                "32.186.79.99",
                "44.255.165.215"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "5 alt1.aspmx.l.google.com.",
                "5 alt2.aspmx.l.google.com.",
                "1 aspmx.l.google.com.",
                "70 mail.italki.com.",
                "60 us.italki.com.",
                "50 aspmx3.googlemail.com.",
                "60 inbound-smtp.us-west-2.amazonaws.com.",
                "40 aspmx2.googlemail.com."
            ],
            "TXT": [
                "\"google-site-verification=QlBKT17O0wJDvAeY_MRc2cI85KaOLdlKP41kyDP6fyg\"",
                "\"google-site-verification=AUOAjxZU3cdoFVZW34_V0hnCcxQv8sWpKUgd33Ktguc\"",
                "\"yandex-verification: 25724b22f4114839\"",
                "\"ca3-aa257102ae4c4e99868d00b5d8c4e6cf\"",
                "\"google-site-verification=V0ocqbrCbT0We-WxBUKMj9dd87OIkbUjWrunRpuag1o\"",
                "\"google-site-verification=Yxk2QIeRJ0wlfkQtehOlgoMfACBbA4yia0a9rL7LoZA\"",
                "\"facebook-domain-verification=1vo3wnd1d1bkvsh3lrg1va8vblgjpg\"",
                "\"ca3-dd71352737c54be08ddf1318d29e28fc\"",
                "\"google-site-verification=G8r2QavmDv_c4Vs-pvIyPvG4ZwRnrF49QzrwpKVoMlc\"",
                "\"ca3-48c07908d02c4eb89a95fd63de5acac1\"",
                "\"v=spf1 include:_spf.google.com include:mail.zendesk.com include:amazonses.com -all\""
            ],
            "NS": [
                "ns-1497.awsdns-59.org.",
                "ns-28.awsdns-03.com.",
                "ns-886.awsdns-46.net.",
                "ns-1858.awsdns-40.co.uk."
            ],
            "SOA": [
                "ns-1858.awsdns-40.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400"
            ],
            "CAA": [
                "0 issuewild \"pki.goog\"",
                "0 issue \"letsencrypt.org\"",
                "0 issuewild \"awstrust.com\"",
                "0 issuewild \"amazonaws.com\"",
                "0 issuewild \"amazon.com\"",
                "0 iodef \"mailto:developer@italki.com\"",
                "0 issue \"pki.goog; cansignhttpexchanges=yes\"",
                "0 issuewild \"amazontrust.com\""
            ],
            "DS": [],
            "DNSKEY": [],
            "RRSIG": [],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "52.26.45.196",
            "32.186.79.99",
            "44.255.165.215"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 include:_spf.google.com include:mail.zendesk.com include:amazonses.com -all",
        "dmarc": "v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:qiqfvhrc@ag.ap.dmarcian.com,mailto:rua@godmarc.io; ruf=mailto:ruf@godmarc.io;fo=1;aspf=r;adkim=r",
        "dkim_selector": "google",
        "dkim_host": "google._domainkey.italki.com",
        "dkim": "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3w06R7+avyKfWScQ1WdqcBMVhfI8BmLifTtOy6phJb6qhbzoteo1xSWITu7mEZkZSrKffdBjUdLkWEJ4HZNYN+7zqAhzY04d995UBWlTlRqLlMSxCaabJkQMxiOKNiLROxuVR45xVuwYUu9mwspGcszhAQ3SFKs55QWOR8zFF2qIO6Mb5OQ+cYf9iKL9wAnKBT9uBsuBy+VJUv3/ajwwV36E81JYJGwMvhoTEyHW0lyKv5JeUM0Zlhs7n9lpvi+3ySooGackdW4IKAZvsdhGvYsEUiSQjX/c9O6vaLBRGQx2ftMIH/rl/j6CT2imb28obAd8T4m3sJQ8hdLPh5IdnwIDAQAB",
        "spf_analysis": {
            "valid": true,
            "lookups": 3,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "",
        "mta_sts": "v=STSv1; id=20251119000000",
        "tls_rpt": "v=TLSRPTv1; rua=mailto:developer@italki.com"
    },
    "advanced": {
        "ptr": "ec2-52-26-45-196.us-west-2.compute.amazonaws.com",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "32.186.79.99",
                        "44.255.165.215",
                        "52.26.45.196"
                    ],
                    "time_ms": 65.46
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "32.186.79.99",
                        "44.255.165.215",
                        "52.26.45.196"
                    ],
                    "time_ms": 32.89
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
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                        "44.255.165.215",
                        "52.26.45.196"
                    ],
                    "time_ms": 26.56
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "32.186.79.99",
                        "44.255.165.215",
                        "52.26.45.196"
                    ],
                    "time_ms": 128.56
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "32.186.79.99",
                        "44.255.165.215",
                        "52.26.45.196"
                    ],
                    "time_ms": 90.36
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "Amazon",
        "subject": "italki.com",
        "valid_from": "2025-12-13T18:00:00-06:00",
        "valid_to": "2027-01-11T17:59:59-06:00",
        "days_remaining": 154,
        "san": [
            "italki.com"
        ],
        "protocol": "TLSv1.2",
        "cipher": "ECDHE-RSA-AES128-GCM-SHA256"
    },
    "http": {
        "url": "https://www.italki.com:443/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "server": "cloudflare",
            "date": "Mon, 10 Aug 2026 03:01:32 GMT",
            "content-type": "text/html; charset=utf-8",
            "content-length": "134",
            "location": "https://www.italki.com:443/",
            "cf-ray": "a28bc1accb1b98ba-STL",
            "cf-cache-status": "DYNAMIC",
            "cache-control": "private, no-cache, no-store, max-age=0, must-revalidate",
            "x-ua-compatible": "IE=Edge",
            "vary": "Accept-Encoding,Origin",
            "content-security-policy": "frame-ancestors 'none'",
            "x-frame-options": "DENY",
            "set-cookie": "__cf_bm=HE9JD0coq6r6vZzjLHw4bAd7SUlyCM7kSVHn7gHrZA4-1786330892.2831097-1.0.1.1-s8xB8UGQqWkxBq3b6TNwVHsLxUKh0OOJF0REF63lgCtahR9elS3YBNS1djOOwR34cqZHWwj5wo0kkyqh4GBCAQyDZMukQMuMZAUHE0g5IIqpQbXBx5abscnZKJ2MgxD5BAPInWln6WBkSLQgd7lA2A; HttpOnly; SameSite=None; Secure; Path=/; Domain=italki.com; Expires=Mon, 10 Aug 2026 03:31:32 GMT",
            "alt-svc": "h3=\":443\"; ma=86400"
        },
        "security_checks": {
            "strict-transport-security": false,
            "content-security-policy": true,
            "x-content-type-options": false,
            "x-frame-options": true,
            "referrer-policy": false,
            "permissions-policy": false,
            "cross-origin-opener-policy": false,
            "cross-origin-embedder-policy": false,
            "cross-origin-resource-policy": false
        },
        "server": "cloudflare",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://www.italki.com:443/",
        "title": "italki - Best language learning app with certificated tutors",
        "description": "Discover a world of languages with italki. Learn over 150 languages including English, Spanish, French, Chinese, etc. with professional online tutors.",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "52.26.45.196": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "32.186.79.99": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "44.255.165.215": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "alt1.aspmx.l.google.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 1.3,
                "banner": "",
                "error": "Network is unreachable"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4018.4,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4010,
                "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": 80.02
}