{
    "ok": true,
    "domain": "bestchange.ru",
    "generated_at": "2026-08-12T14:43:14-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 67,
        "label": "Fair",
        "categories": {
            "dns": 85,
            "mail": 70,
            "security": 65,
            "network": 35,
            "availability": 60
        },
        "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": 15,
                "lost_points": 0,
                "detail": "DS and DNSKEY detected."
            },
            {
                "category": "dns",
                "title": "CAA policy",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "Certificate authority restriction."
            },
            {
                "category": "dns",
                "title": "DNS propagation",
                "max_points": 10,
                "earned_points": 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": 0,
                "lost_points": 20,
                "detail": "No tested DKIM selector responded."
            },
            {
                "category": "mail",
                "title": "MTA-STS",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "Mail transport policy."
            },
            {
                "category": "mail",
                "title": "TLS-RPT",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5,
                "detail": "TLS reporting policy."
            },
            {
                "category": "security",
                "title": "Valid TLS certificate",
                "max_points": 55,
                "earned_points": 55,
                "lost_points": 0,
                "detail": "67 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": 0,
                "lost_points": 40,
                "detail": "HTTP/2 429 "
            },
            {
                "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": "ok",
                "title": "DNSSEC chain",
                "detail": "DS and DNSKEY detected.",
                "category": "dns",
                "max_points": 15,
                "earned_points": 15,
                "lost_points": 0
            },
            {
                "level": "error",
                "title": "CAA policy",
                "detail": "Certificate authority restriction.",
                "category": "dns",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "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": "error",
                "title": "DKIM",
                "detail": "No tested DKIM selector responded.",
                "category": "mail",
                "max_points": 20,
                "earned_points": 0,
                "lost_points": 20
            },
            {
                "level": "error",
                "title": "MTA-STS",
                "detail": "Mail transport policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "error",
                "title": "TLS-RPT",
                "detail": "TLS reporting policy.",
                "category": "mail",
                "max_points": 5,
                "earned_points": 0,
                "lost_points": 5
            },
            {
                "level": "ok",
                "title": "Valid TLS certificate",
                "detail": "67 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": "error",
                "title": "HTTP response",
                "detail": "HTTP/2 429 ",
                "category": "availability",
                "max_points": 40,
                "earned_points": 0,
                "lost_points": 40
            },
            {
                "level": "ok",
                "title": "HTTPS final URL",
                "detail": "Final URL uses HTTPS.",
                "category": "availability",
                "max_points": 20,
                "earned_points": 20,
                "lost_points": 0
            }
        ]
    },
    "dns": {
        "records": {
            "A": [
                "104.20.17.195",
                "172.66.145.174"
            ],
            "AAAA": [],
            "CNAME": [],
            "MX": [
                "20 in2-smtp.messagingengine.com.",
                "10 in1-smtp.messagingengine.com."
            ],
            "TXT": [
                "\"v=spf1 include:spf.messagingengine.com -all\"",
                "\"facebook-domain-verification=a5avu8bhmhfgibelge8e72yox3396l\"",
                "\"google-site-verification=kjmlpd6gS73ggRBOhUu2F_GluPtDYrul-NE0MtMy0ok\""
            ],
            "NS": [
                "gns22.cloudns.net.",
                "gns24.cloudns.net.",
                "gns21.cloudns.net.",
                "gns23.cloudns.net."
            ],
            "SOA": [
                "gns21.cloudns.net. support.cloudns.net. 2026072806 7200 1800 1209600 3600"
            ],
            "CAA": [],
            "DS": [
                "54546 13 2 6E11975CC78661A7B3B549B4EF36D2EFE955E07122E4BEC33E60E0A2 F73B9641"
            ],
            "DNSKEY": [
                "256 3 13 LpX2DuywS250pqOnyJMp5bTrjiZRl9keJ7nqBcVQgvC3slDLOIIp6Fbq BuMVrJygNuwjmHooWd9NylYaBfiyPQ==",
                "257 3 13 x44MJu0fr7byN7SA76ieFk6ntXVPIzQwwbLCLDblN7JXs0gMBxPZCKUv PDWHcnnMRqGGR+SVxqyMk2jsMyiuxg=="
            ],
            "RRSIG": [
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                "DNSKEY 13 2 3600 20260827201908 20260728191908 14601 bestchange.ru. oaAc439WFvkQGmspovMgPdxMhsEgzy0/xXCL1Z9hWXC2Rx+Mg6qVED7m ykUPFmEhRqgJ4Q/QO9JcGI9avJ3bjw==",
                "DNSKEY 13 2 3600 20260827201908 20260728191908 54546 bestchange.ru. D8xd1KnjN7nhTMkI9KUgbReu86OhH2a2iN48kTCKGUsAW7JZcv46ueah CxNOSHnaGsd0PmhRMrRHTSDEzQPo8g==",
                "NS 13 2 3600 20260827201908 20260728191908 14601 bestchange.ru. /NspdcXegz0t8j/fen96ILhWdklrHc568dKamCBULHaJ4JzxNz11R9Nw CDi8aNnkYMgyspfn9cTB0yXjTE2hsQ==",
                "MX 13 2 3600 20260827201908 20260728191908 14601 bestchange.ru. aa2OzGP6n0W0YX3H506j5dC/Du9ZQIvRcL38wbTA5Edo8XUa95XeUqGn HgZmY37BA9w0ZLjbqepKPAgWY79PgQ==",
                "DS 8 2 345600 20260825041323 20260713101510 25761 ru. BZVdFu261ZSF9Z+ln3o8XJj3wZFR0vbqSflIAWKblOG1EqpdHqXU6t/W Uwe04toSStT6e811DM1uR9gGYosv4+7d6mV1JlXe8Y+410rC/LQiKpKd iDanPuCZoemj647hJSXzOG0yw+x+KGECRWJaF2Xef34RnqDLasOLTo2Z SU4="
            ],
            "NSEC": [],
            "NSEC3": [],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "104.20.17.195",
            "172.66.145.174"
        ],
        "ipv6": []
    },
    "mail": {
        "spf": "v=spf1 include:spf.messagingengine.com -all",
        "dmarc": "v=DMARC1; p=reject",
        "dkim_selector": "x",
        "dkim_host": "",
        "dkim": "",
        "spf_analysis": {
            "valid": true,
            "lookups": 1,
            "final": "-all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "v=BIMI1; l=https://www.bestchange.ru/images/logo-short.svg",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "104.20.17.195",
                        "172.66.145.174"
                    ],
                    "time_ms": 47.69
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "104.20.17.195",
                        "172.66.145.174"
                    ],
                    "time_ms": 50.23
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "104.20.17.195",
                        "172.66.145.174"
                    ],
                    "time_ms": 24.03
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "104.20.17.195",
                        "172.66.145.174"
                    ],
                    "time_ms": 52
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "104.20.17.195",
                        "172.66.145.174"
                    ],
                    "time_ms": 46
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "GlobalSign nv-sa",
        "subject": "www.bestchange.ru",
        "valid_from": "2026-04-03T08:44:00-05:00",
        "valid_to": "2026-10-19T08:44:00-05:00",
        "days_remaining": 67,
        "san": [
            "www.bestchange.ru",
            "bestchange.ru"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_256_GCM_SHA384"
    },
    "http": {
        "url": "https://bestchange.ru/",
        "status": "HTTP/2 429 ",
        "http_version": "3",
        "headers": {
            "date": "Wed, 12 Aug 2026 19:43:05 GMT",
            "content-type": "text/html",
            "server": "cloudflare",
            "cache-control": "no-store",
            "cf-cache-status": "DYNAMIC",
            "cf-ray": "a2a1f78a8a76f7d2-ORD"
        },
        "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": "cloudflare",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://bestchange.ru/",
        "title": "Too Many Requests",
        "description": "",
        "success": true,
        "error": "",
        "status": 429
    },
    "network": {
        "104.20.17.195": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        },
        "172.66.145.174": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "in2-smtp.messagingengine.com",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 12.2,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4026.8,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4031.8,
                "banner": "",
                "error": "Connection timed out"
            }
        ]
    },
    "visitor": {
        "ip": "216.73.216.220",
        "reverse": "",
        "country": "United States",
        "country_code": "US",
        "region": "Ohio",
        "city": "Columbus",
        "latitude": 39.9586885,
        "longitude": -82.9986903,
        "isp": "Amazon.com, Inc.",
        "organization": "Anthropic, PBC",
        "asn": 16509,
        "timezone": "America/New_York",
        "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": 74.57
}