{ "ok": true, "domain": "nrc.gov", "generated_at": "2026-08-09T13:13:48-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 73, "label": "Fair", "categories": { "dns": 85, "mail": 90, "security": 69, "network": 50, "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": "1 IPv4 address(es) detected." }, { "category": "dns", "title": "IPv6 (AAAA)", "max_points": 10, "earned_points": 0, "lost_points": 10, "detail": "0 IPv6 address(es) detected." }, { "category": "dns", "title": "Name server redundancy", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "5 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": "4 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": "74 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": 4, "lost_points": 31, "detail": "1 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "PTR: nrc.gov" }, { "category": "network", "title": "IPv4 diversity", "max_points": 35, "earned_points": 20, "lost_points": 15, "detail": "Two or more IPv4 addresses receive full points." }, { "category": "network", "title": "IPv6 connectivity", "max_points": 35, "earned_points": 0, "lost_points": 35, "detail": "AAAA availability." }, { "category": "availability", "title": "DNS resolution", "max_points": 40, "earned_points": 40, "lost_points": 0, "detail": "At least one address family must resolve." }, { "category": "availability", "title": "HTTP response", "max_points": 40, "earned_points": 0, "lost_points": 40, "detail": "HTTP/2 403 " }, { "category": "availability", "title": "HTTPS final URL", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "Final URL uses HTTPS." } ], "methodology": "Each category is normalized to 100. The total is the weighted sum: DNS 25%, Email 20%, Security 25%, Network 10%, Availability 20%.", "diagnostics": [ { "level": "ok", "title": "IPv4 (A)", "detail": "1 IPv4 address(es) detected.", "category": "dns", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "error", "title": "IPv6 (AAAA)", "detail": "0 IPv6 address(es) detected.", "category": "dns", "max_points": 10, "earned_points": 0, "lost_points": 10 }, { "level": "ok", "title": "Name server redundancy", "detail": "5 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": "4 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": "74 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": "1 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 4, "lost_points": 31 }, { "level": "ok", "title": "PTR reverse DNS", "detail": "PTR: nrc.gov", "category": "network", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "warning", "title": "IPv4 diversity", "detail": "Two or more IPv4 addresses receive full points.", "category": "network", "max_points": 35, "earned_points": 20, "lost_points": 15 }, { "level": "error", "title": "IPv6 connectivity", "detail": "AAAA availability.", "category": "network", "max_points": 35, "earned_points": 0, "lost_points": 35 }, { "level": "ok", "title": "DNS resolution", "detail": "At least one address family must resolve.", "category": "availability", "max_points": 40, "earned_points": 40, "lost_points": 0 }, { "level": "error", "title": "HTTP response", "detail": "HTTP/2 403 ", "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": [ "148.184.180.35" ], "AAAA": [], "CNAME": [], "MX": [ "10 mail5.nrc.gov.", "10 mail4.nrc.gov.", "10 r4mail1.nrc.gov.", "10 r4mail2.nrc.gov." ], "TXT": [ "\"_j4w1bxhrpdagb2e3meaaf20mrzymomv\"", "\"domain-verification=aftIcKeXgQOvVC-V-8W97iyy7La0cyY1d9bUoyLbepg\"", "\"openai-domain-verification=dv-dXKnNcRdWiRhUEJuwutwuCBK\"", "\"apple-domain-verification=UHb4ziZa9mhVGGpv\"", "\"identrust_validate=46GtRVn6sZ25pMCvgN7Sf58oxv00fh4m065o49U19esP\"", "\"cloudflare_dashboard_sso=bcaf9540a30612b1c22367755145941d\"", "\"v=spf1 ip4:148.184.230.0/24 ip4:148.184.179.0/24 ip4:148.184.180.0/24 ip4:148.184.185.0/24 ip4:148.184.231.25 -all\"", "\"docusign=1462ecf3-011c-4738-b1e0-57db57790a7b\"", "\"box-domain-verification=188d55b7f9bc574046e7967ec392d5695e2782dfd9cd73214eef3219cdd47807\"", "\"google-site-verification=ViHe5l7h-Y_ZVr7Glpo6LrgehWYSTY2gT2R85IWPj4I\"", "\"MS=ms97771157\"" ], "NS": [ "ns0036.secondary.cloudflare.com.", "a18-65.akam.net.", "ns0132.secondary.cloudflare.com.", "a3-67.akam.net.", "a8-65.akam.net." ], "SOA": [ "a18-65.akam.net. postmaster.nrc.gov. 2025126647 10800 1080 2419200 900" ], "CAA": [], "DS": [ "4057 8 2 AEB5F4B57ECE69F28868CB7FEA86B16CA7B9D07CEE7E9FAD9CD68487 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AGqQQITSwI029t6aJOwJjYlp0AStkhsBC9S5nLr3mAJKZbIWQy5HiCDz rxIlrUrzT/7OuhvbLQkqP4zjbT1PXwQr/xB/Qo0HgUZhqY+XD3A9ESco zSVj3EXHVWqpSSFq20q11+pYWra7UvDm/YmbzGmi5e/grVvTR5cvoc0h AQ0=", "DS 13 2 3600 20260810191338 20260808171338 35496 gov. +b6Ewe7k8WybbPkqpWE1IwWlBNgQ4PLSHZaRObYbCihi+QT5pVB5G68s wtHP+HOnLojX9i/LR6ecJu2IqwsveQ==", "NSEC3PARAM 8 2 900 20260812221252 20260808214858 45976 nrc.gov. P9VllrOEw1p/0frCbiHx1VuGjNHU2lrtxBZ1C7vgxBIWTf+fLmqiLoBn J2pRS0UOvprfuEFTrGQGuDBo+SmMu5FV86y9Br1mqKV876Ercu0v+3Ri jcrigTcvRzMQxDyr18jsZ977oMKjIoKh+s0O2vpYggP8d4NccPjwem0j 6SM=" ], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "148.184.180.35" ], "ipv6": [] }, "mail": { "spf": "v=spf1 ip4:148.184.230.0/24 ip4:148.184.179.0/24 ip4:148.184.180.0/24 ip4:148.184.185.0/24 ip4:148.184.231.25 -all", "dmarc": "v=DMARC1; p=reject; pct=100; rua=mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:postmaster@nrc.gov;", "dkim_selector": "selector1", "dkim_host": "selector1._domainkey.nrc.gov", "dkim": "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDQvXoTOnjSLB2WXC4mpiX3rAuX4b6YdPKEsjkr26SI30I1U0Pa2QLyNzFubUPOGjfIiiAEyQL+hGS0hwxJM/m2tma7kEhseB9XH1bBhP0sip3vb7UNg2fjbaYv9vdOAQftlD5GIKHuLxazFjmvYyGeCBw7yXYmhyZMrIpH1RkCkwIDAQAB; n=1024,1481612587,1497337387", "spf_analysis": { "valid": true, "lookups": 0, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "reject" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "nrc.gov", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "148.184.180.35" ], "time_ms": 34.78 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "148.184.180.35" ], "time_ms": 23.83 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "148.184.180.35" ], "time_ms": 31.09 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "148.184.180.35" ], "time_ms": 132.18 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "148.184.180.35" ], "time_ms": 67.78 } ] } }, "ssl": { "available": true, "issuer": "DigiCert Inc", "subject": "nrc.gov", "valid_from": "2026-04-06T19:00:00-05:00", "valid_to": "2026-10-22T18:59:59-05:00", "days_remaining": 74, "san": [ "nrc.gov", "www.nrc.gov" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_256_GCM_SHA384" }, "http": { "url": "https://www.nrc.gov/", "status": "HTTP/2 403 ", "http_version": "3", "headers": { "location": "https://www.nrc.gov/", "strict-transport-security": "max-age=31536000 ; includeSubDomains ; preload", "server": "AkamaiGHost", "mime-version": "1.0", "content-type": "text/html", "content-length": "365", "x-reference-error": "18.e5623017.1786299220.4e2dbaf8", "expires": "Sun, 09 Aug 2026 18:13:40 GMT", "date": "Sun, 09 Aug 2026 18:13:40 GMT", "alt-svc": "h3=\":443\"; ma=93600", "akamai-grn": "0.e5623017.1786299220.4e2dbaf8", "server-timing": "ak_p; desc=\"1786299220324_389047013_1311619832_14_9892_59_11_15\";dur=1" }, "security_checks": { "strict-transport-security": true, "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": "AkamaiGHost", "powered_by": "" }, "webpage": { "url": "https://www.nrc.gov/", "title": "Homepage | Nuclear Regulatory Commission", "description": "", "success": true, "error": "", "status": 200 }, "network": { "148.184.180.35": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "mail5.nrc.gov", "ports": [ { "port": 25, "open": false, "time_ms": 4.7, "banner": "", "error": "Connection refused" }, { "port": 465, "open": false, "time_ms": 4020.6, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4021.4, "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": 110.63 }