{
    "ok": true,
    "domain": "vnnic.vn",
    "generated_at": "2026-08-10T19:55:53-05:00",
    "cache": {
        "hit": true,
        "ttl": 0
    },
    "score": {
        "total": 86,
        "label": "Good",
        "categories": {
            "dns": 95,
            "mail": 70,
            "security": 77,
            "network": 85,
            "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": 10,
                "lost_points": 0,
                "detail": "1 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": 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": "172 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": 12,
                "lost_points": 23,
                "detail": "3 of 9 evaluated headers detected."
            },
            {
                "category": "network",
                "title": "PTR reverse DNS",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0,
                "detail": "PTR: vnnic.vn"
            },
            {
                "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": 35,
                "lost_points": 0,
                "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": "1 IPv4 address(es) detected.",
                "category": "dns",
                "max_points": 30,
                "earned_points": 30,
                "lost_points": 0
            },
            {
                "level": "ok",
                "title": "IPv6 (AAAA)",
                "detail": "1 IPv6 address(es) detected.",
                "category": "dns",
                "max_points": 10,
                "earned_points": 10,
                "lost_points": 0
            },
            {
                "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": "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": "172 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": "3 of 9 evaluated headers detected.",
                "category": "security",
                "max_points": 35,
                "earned_points": 12,
                "lost_points": 23
            },
            {
                "level": "ok",
                "title": "PTR reverse DNS",
                "detail": "PTR: vnnic.vn",
                "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": "ok",
                "title": "IPv6 connectivity",
                "detail": "AAAA availability.",
                "category": "network",
                "max_points": 35,
                "earned_points": 35,
                "lost_points": 0
            },
            {
                "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": [
                "203.119.73.25"
            ],
            "AAAA": [
                "2001:dc8:1:2::25"
            ],
            "CNAME": [],
            "MX": [
                "10 mailgw2.vnnic.vn.",
                "10 mailgw1.vnnic.vn."
            ],
            "TXT": [
                "\"w7lt3kdydg61s3ftmbqq1gcs49sfd77b\"",
                "\"MS=1371B3C0CA4AE09CABA35499D57F49A84CD6CBA3\"",
                "\"_795u8xhejeqc5cuc3t2qpfv2aj7okyt\"",
                "\"google-site-verification=hBMqyLV-01B7C9pb4UxlAhuRst3zPFRwFpQawSv2whk\"",
                "\"v=spf1 a mx ip4:203.119.11.128/25 ip4:203.119.8.115/32 ip4:203.119.8.117/32 include:amazonses.com ~all\""
            ],
            "NS": [
                "dns1.vnnic.vn.",
                "dns3.vnnic.vn.",
                "dns2.vnnic.vn."
            ],
            "SOA": [
                "dns1.vnnic.vn. postmaster.vnnic.vn. 2023037407 1800 900 604800 5400"
            ],
            "CAA": [],
            "DS": [
                "20609 8 2 E1903CA10719BC7D4F703A0512D55D04DAAA6F49E9A35F9D974EA8BF 57FBBDA9",
                "20609 8 4 8BCE5E25B75D079F5538E6EDF535FABFC898AEF3D5D30CB4EB9BE863 F35AA9B980D0EEB979358FA4630CCD9C57D5F2BB"
            ],
            "DNSKEY": [
                "257 3 8 AwEAAbED46j+Oke1b5vFNuTB1Zpa3dRzFmxWfM9PcQH4k7YF23mI4D8M qNBDJZtXGEV1dhgJrqpKdQ60y0aqejrUruspzQqwZDU+UUDc2L4FRC/0 vEXeYNwV1m11+juqbf43BvVPI0oMEyKL0WbaGMMjRUzlqjHB10OZh3EA vPxymV+gwbRvWRjioy5n0tH4UpY8mPlgnMXpqIa49zWwJ5/uSu4yVy/Q AvFlv5jDzyBc/2HLappVaOhda4HD4vxhVcPw5om19+eIFNQchJDy8EKL Pyv9+clfPlNRj4HlXx+R3lBZvBiMHkyHaBs3DSMIaAqRskGjpFTtznay 2ahwDpnwo/U=",
                "256 3 8 AwEAAc3csBJL2YFoU7JOCj/8IXy41xFi1nckI0eu5xmYFVYWvCQysr9Y B7uFj2oCPzjt52xRxOZKtRomvA0ftn4yDi7h4+dYM/w/ap1J/zYqMVzz jkK41rSTfNBKFocGxVqEn19zbajxsAaLIxF97lg4xCrn5+Z4gYJyf3Hk 6SSAyGWxXFbaNg36TRpHHyDZARvXAxI0UT/miFLDyegkvhglV621pl5X WfqbJQ19tavVma+9f/T6LbBuKAJ6srsJn1R+ospTDMZJhNizd54duxj3 sSE/xRpuL+S7dIxSvKV9Brrc5U6LGu+cIwYk9KI7wr2QHWEwIPeCFxTX 4GITTFq3I98="
            ],
            "RRSIG": [
                "NS 8 2 43200 20260816184203 20260802183503 36609 vnnic.vn. SmIPSPGbHors+dwvezAb0FoE3w23QTsMLwGN1nSO7YZQ3kJkIr/XvEBm lDpo6OLsLJS5NTtwixKfRev1X2at5XOiq4ZjfFraTMS4nKOCXsAslo0E e1kdFcocFBeQ1RubJG2ZLaHcOUjW7bH2dMWKnWi39OyEWeHWuMkJxPBO RXVhWQC87pc1mrxgv9xVudsDFSXU0U6Ii92qbiKbex01Zpfku9f5fBBI rlAyKVlyXBwNILcGbO5BnNdm0hxQcmkLnmNvwj12Jydel0ikBdpZyvnq CGEjeZqV8hWM6ZZINGTzdh1paKUuTnQSxaPe9hctLpgFLN7rbHDw/2On UZoKdg==",
                "TXT 8 2 300 20260816184203 20260802183503 36609 vnnic.vn. xmpfqEdo/BHdlDB0gCCQTyT7Uueu7sAhzI7SalDmVhPqV9UB8pJmrMIt jwwehlD9i1B9py/PJrmQZzgrVdwgTHBt1Q3rDxagSbWVKeskQtm/05zC 4YXI2Ar278d1lKQlCOjEiZrbfsLQkSWjoCvLYgJm3/+Nn2RBSLOMgw3/ 7KGrUhUr+tRT5Z0BsN8QAy6OqrdPC+dbd9MG+uDZRFjrAtVjYl22oodG MjtC7Hgy3JsNGA514T9VkbtAhEZjMGNOFTL5kfQj6T+C8/ify1K8V8p7 xhQooxBiXBtmzTwlTx6gBOO4G+Dr85F3gdYc2U9LTjUSdbn08raCfL2E p0DNkA==",
                "A 8 2 300 20260818225001 20260804215900 36609 vnnic.vn. a0Gqd2u8R88OJK13XSkWiNK/XYWVNHRZdeBYlZVbn4QYYcpcQBGDUvjw rCiR+Wnw3dOjpLKsMaLq7EiaW65lRfaQtOzLEwuErnN3r9kdOd3xqiEK O1W+gsnIvF4MSvjSTKHVeSFLtAT3J9Ba1RVcoMVvY5NMIlHEBMrs+rJY ZIg5ATBoOrt+kfhKHADhpAiYyB6VsYHZK/gtU5IueasFaufvMbG2xn5m rnPjkqHSn03YEFZmcVdbuIAQNwoiUeFwSI4Tmos9jn+xLnMADLMQs2iW bbXDfszvZgzVqQ2r25kYMeMiecnvCOnMR3bB1sALUa0agjkO1aPC4pTC /P8ZmA==",
                "DS 8 2 43200 20260822113021 20260723104339 52956 vn. KWPxbQ58oe57ULiNW/DYTwVYj+zC1xr5jFMkWb6yMPGzWmLMkXkyGltT VgwycjWFCHegMyIIi01qbVIZ3DlRYQOkfevPy9LXWpAqSLKe86i2kxFK V3yv2Vpp0ICpdMxRka55jKOcv52ujeeTAtQG10c45AOgcSW69ko38rI3 2Dc="
            ],
            "NSEC": [],
            "NSEC3": [
                ";; communications error to 69.64.44.20#53: timed out"
            ],
            "SRV": [],
            "NAPTR": [],
            "TLSA": [],
            "SSHFP": []
        },
        "ipv4": [
            "203.119.73.25"
        ],
        "ipv6": [
            "2001:dc8:1:2::25"
        ]
    },
    "mail": {
        "spf": "v=spf1 a mx ip4:203.119.11.128/25 ip4:203.119.8.115/32 ip4:203.119.8.117/32 include:amazonses.com ~all",
        "dmarc": "v=DMARC1; p=reject; rua=mailto:dmarc@vnnic.vn; ruf=mailto:dmarc@vnnic.vn; fo=1; pct=50;",
        "dkim_selector": "x",
        "dkim_host": "",
        "dkim": "",
        "spf_analysis": {
            "valid": true,
            "lookups": 3,
            "final": "~all",
            "message": "Within the estimated limit"
        },
        "dmarc_analysis": {
            "valid": true,
            "policy": "reject"
        },
        "bimi": "",
        "mta_sts": "",
        "tls_rpt": ""
    },
    "advanced": {
        "ptr": "vnnic.vn",
        "propagation": {
            "consistent": true,
            "results": [
                {
                    "provider": "Google",
                    "server": "8.8.8.8",
                    "result": [
                        "203.119.73.25"
                    ],
                    "time_ms": 253.14
                },
                {
                    "provider": "Cloudflare",
                    "server": "1.1.1.1",
                    "result": [
                        "203.119.73.25"
                    ],
                    "time_ms": 1740.81
                },
                {
                    "provider": "Quad9",
                    "server": "9.9.9.9",
                    "result": [
                        "203.119.73.25"
                    ],
                    "time_ms": 306.62
                },
                {
                    "provider": "OpenDNS",
                    "server": "208.67.222.222",
                    "result": [
                        "203.119.73.25"
                    ],
                    "time_ms": 1112.99
                },
                {
                    "provider": "AdGuard",
                    "server": "94.140.14.14",
                    "result": [
                        "203.119.73.25"
                    ],
                    "time_ms": 548.05
                }
            ]
        }
    },
    "ssl": {
        "available": true,
        "issuer": "DigiCert Inc",
        "subject": "*.vnnic.vn",
        "valid_from": "2026-01-15T18:00:00-06:00",
        "valid_to": "2027-01-30T17:59:59-06:00",
        "days_remaining": 172,
        "san": [
            "*.vnnic.vn",
            "thongbaotenmien.vn",
            "tenmien.vn",
            "vnix.vn",
            "nguoibanso.vn",
            "xn--ngibns-4zb8830domavd.vn",
            "tracuutenmien.vn",
            "tracuutenmien.gov.vn",
            "guongmatso.tenmien.vn",
            "thuonghieuso.tenmien.vn",
            "vnnic.vn",
            "hiendienonline.tenmien.vn"
        ],
        "protocol": "TLSv1.3",
        "cipher": "TLS_AES_128_GCM_SHA256"
    },
    "http": {
        "url": "https://vnnic.vn/",
        "status": "HTTP/2 200 ",
        "http_version": "3",
        "headers": {
            "date": "Mon, 10 Aug 2026 02:38:46 GMT",
            "server": "Apache",
            "cache-control": "max-age=900, public",
            "content-language": "vi",
            "x-content-type-options": "nosniff",
            "x-frame-options": "SAMEORIGIN",
            "expires": "Sun, 19 Nov 1978 05:00:00 GMT",
            "vary": "Cookie",
            "last-modified": "Mon, 10 Aug 2026 02:38:46 GMT",
            "etag": "\"1786329526\"",
            "content-type": "text/html; charset=UTF-8",
            "strict-transport-security": "max-age=0",
            "set-cookie": "UqZBpD3n3iPIDwJU=v1DJlZQgSDcTE; Expires=Tue, 11-Aug-2026 00:40:32 GMT; Path=/"
        },
        "security_checks": {
            "strict-transport-security": true,
            "content-security-policy": false,
            "x-content-type-options": true,
            "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": "Apache",
        "powered_by": ""
    },
    "webpage": {
        "url": "https://vnnic.vn/",
        "title": "Trung tâm Internet Việt Nam (VNNIC)",
        "description": "",
        "success": true,
        "error": "",
        "status": 200
    },
    "network": {
        "203.119.73.25": {
            "success": false,
            "country": "",
            "region": "",
            "city": "",
            "asn": "",
            "organization": "",
            "isp": ""
        }
    },
    "smtp": {
        "host": "mailgw2.vnnic.vn",
        "ports": [
            {
                "port": 25,
                "open": false,
                "time_ms": 212,
                "banner": "",
                "error": "Connection refused"
            },
            {
                "port": 465,
                "open": false,
                "time_ms": 4232.3,
                "banner": "",
                "error": "Connection timed out"
            },
            {
                "port": 587,
                "open": false,
                "time_ms": 4233.4,
                "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": 98.2
}