{ "ok": true, "domain": "mtsu.edu", "generated_at": "2026-08-09T12:53:25-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 81, "label": "Good", "categories": { "dns": 70, "mail": 90, "security": 84, "network": 35, "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": "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": 0, "lost_points": 15, "detail": "Both DS and DNSKEY are required." }, { "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": "1 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": "69 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": 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": 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": "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": "error", "title": "DNSSEC chain", "detail": "Both DS and DNSKEY are required.", "category": "dns", "max_points": 15, "earned_points": 0, "lost_points": 15 }, { "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": "1 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": "69 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": "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": "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": [ "141.193.213.21", "141.193.213.20" ], "AAAA": [], "CNAME": [], "MX": [ "0 mtsu-edu.mail.protection.outlook.com." ], "TXT": [ "\"e2ma-verification=2ghib\"", "\"e2ma-verification=9ni3\"", "\"logmein-verification-code=81521953-721b-44ae-a2da-f6d98627016b\"", "\"google-site-verification=soGqm8LTSNDatcnlvLt6C_jkVewfdJFuwS-2ZoAl6WE\"", "\"jamf-site-verification=47s57IVACeL13E40o3ExwQ\"", "\"canva-site-verification=kf4pfvxGaL5oMuop3lNnzA\"", "\"google-site-verification=Vg3xbz_GE0Ct5xoLjs4Xa4KS-uzkqAQ3Nfy_xS14giY\"", "\"google-site-verification=xCsEHi1XPGUDyJtUl3G-tch4e58n44qIS2hzU6Bnqm4\\194\\160\"", "\"apple-domain-verification=4pNgcpJ6dS3HCz0s\"", "\"google-gws-recovery-domain-verification=40279580\"", "\"google-site-verification=Moip_cnf9SziX8AOJZo7WPZ030zlI8tGJVDpXEur2Uw\"", "\"anthropic-domain-verification-hr6wn0=6Y2QhuS408I0wICSC50kR3Lio\"", "\"ms-domain-verification=6399cb48-af75-4c5b-ab5e-f1ce2255d134\"", "\"autodesk-domain-verification=XEuTyhS1FqyqUxKtwXQe\"", "\"e2ma-verification=r4h\"", "\"v=spf1 mx ip4:161.45.193.155 ip4:161.45.193.156 ip4:128.242.118.200 ip4:198.72.112.160 ip4:98.118.152.30 ip4:98.118.152.29 ip4:98.118.152.28 ip4:98.118.152.27 ip4:98.118.152.26 ip4:108.166.188.163 ip4:108.166.188.162 ip4:50.56.120.52 ip4:38.72.98.48 ip4:5\" \"0.56.244.157 ip4:209.73.26.208 ip4:209.73.26.210 ip4:209.73.26.219 ip4:24.73.102.138 ip4:161.45.193.157 ip4:161.45.193.154 ip4:198.37.152.49 ip4:12.228.6.215 ip4:139.60.0.0/22 ip4:207.178.216.32/27 ip4:169.54.207.235 ip4:206.107.42.254 ip4:206.107.42.249 \" \"ip4:216.146.32.161 ip4:216.146.32.188 ip4:216.146.32.187 ip4:216.146.32.186 ip4:216.146.32.185 ip4:81.93.173.201 ip4:81.93.164.103 ip4:199.231.134.73/32 ip4:66.45.4.80 ip4:199.244.78.223 ip4:199.244.78.224 ip4:74.122.104.0/22 ip4:64.128.160.11 ip4:64.128.\" \"160.12 ip4:66.45.4.73 ip4:66.45.4.68 ip4:66.45.4.69 ip4:198.187.196.100 ip4:198.187.196.130 ip4:161.45.193.182 ip4:209.96.218.6 ip4:70.85.145.107 ip4:70.85.145.98 ip4:66.151.109.0/24 ip4:64.72.147.23 ip4:66.219.32.120 ip4:167.181.33.37 ip4:64.15.252.10 ip\" \"4:216.74.147.22 ip4:167.181.46.91 ip4:161.181.46.72 ip4:161.45.193.81 ip4:161.45.193.86 ip4:161.45.157.30 ip4:161.45.162.49 ip4:161.45.157.40 ip4:161.45.157.41 ip4:161.45.157.42 include:spf.protection.outlook.com include:sendgrid.net include:emsd1.com inc\" \"lude:amazonses.com include:e2ma.net include:spf_.watermarkinsights.com -all\"", "\"smartsheet-site-validation=7wp2J-EzdOFw7BRNz2diCFnmWLsZPomh\"", "\"facebook-domain-verification=1mifdmrdx1uc8sqw4942wdzl5125mf\"", "\"e2ma-verification=xx8eb\"", "\"V62xjH1/tGkPWpjRan/uoE4ilHPlbIlpPS4zCqNtr+y0ySj2tTOWe5IIev7KGhkogJJVq64YeNzYEjZLitHCew==\"", "\"e2ma-verification=essgb\"", "\"autodesk-domain-verification=TSW4T0u7AeaST8t557J7\"", "\"e2ma-verification=5vqab\"", "\"ZOOM_verify_UMfxiJWpRayUaVj8jcuvIQ\"", "\"e2ma-verification=1khib\"", "\"e2ma-verification=rbd4\"", "\"adobe-idp-site-verification=27396e4cfcb932227936e5417af1dcb814332f34e375f9e0b930b36e51bba213\"" ], "NS": [ "DNS-DMZ1.mtsu.edu.", "mtextdns01.mtsu.edu.", "DNS-DMZ2.mtsu.edu." ], "SOA": [ "DNS-DMZ1.mtsu.edu. abuse.mtsu.edu. 684518170 3600 1800 3600000 10800" ], "CAA": [], "DS": [], "DNSKEY": [], "RRSIG": [], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "141.193.213.21", "141.193.213.20" ], "ipv6": [] }, "mail": { "spf": "v=spf1 mx ip4:161.45.193.155 ip4:161.45.193.156 ip4:128.242.118.200 ip4:198.72.112.160 ip4:98.118.152.30 ip4:98.118.152.29 ip4:98.118.152.28 ip4:98.118.152.27 ip4:98.118.152.26 ip4:108.166.188.163 ip4:108.166.188.162 ip4:50.56.120.52 ip4:38.72.98.48 ip4:50.56.244.157 ip4:209.73.26.208 ip4:209.73.26.210 ip4:209.73.26.219 ip4:24.73.102.138 ip4:161.45.193.157 ip4:161.45.193.154 ip4:198.37.152.49 ip4:12.228.6.215 ip4:139.60.0.0/22 ip4:207.178.216.32/27 ip4:169.54.207.235 ip4:206.107.42.254 ip4:206.107.42.249 ip4:216.146.32.161 ip4:216.146.32.188 ip4:216.146.32.187 ip4:216.146.32.186 ip4:216.146.32.185 ip4:81.93.173.201 ip4:81.93.164.103 ip4:199.231.134.73/32 ip4:66.45.4.80 ip4:199.244.78.223 ip4:199.244.78.224 ip4:74.122.104.0/22 ip4:64.128.160.11 ip4:64.128.160.12 ip4:66.45.4.73 ip4:66.45.4.68 ip4:66.45.4.69 ip4:198.187.196.100 ip4:198.187.196.130 ip4:161.45.193.182 ip4:209.96.218.6 ip4:70.85.145.107 ip4:70.85.145.98 ip4:66.151.109.0/24 ip4:64.72.147.23 ip4:66.219.32.120 ip4:167.181.33.37 ip4:64.15.252.10 ip4:216.74.147.22 ip4:167.181.46.91 ip4:161.181.46.72 ip4:161.45.193.81 ip4:161.45.193.86 ip4:161.45.157.30 ip4:161.45.162.49 ip4:161.45.157.40 ip4:161.45.157.41 ip4:161.45.157.42 include:spf.protection.outlook.com include:sendgrid.net include:emsd1.com include:amazonses.com include:e2ma.net include:spf_.watermarkinsights.com -all", "dmarc": "v=DMARC1; p=none; rua=mailto:dmarc@mtsu.edu", "dkim_selector": "selector1", "dkim_host": "selector1._domainkey.mtsu.edu", "dkim": "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/jEknW0liR8n4rEidTApyhVoqmmpCV3gghi7cmEdUMGWYSEb+OhVEhjAXiICnAswbbTVxDVqlrKSx4HJ2Vy2PJ8RNLvLjmQ6TUi+U7oc/aeXA324EpzoEVmE/v/8ZhUVJ/obmKNg26Nmn2cLA3seaDj1LKt/VZiwxuGD22AbZ1QIDAQAB; n=1024,1450862344,1466673544", "spf_analysis": { "valid": true, "lookups": 7, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "none" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "141.193.213.20", "141.193.213.21" ], "time_ms": 76.06 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "141.193.213.20", "141.193.213.21" ], "time_ms": 83.89 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "141.193.213.20", "141.193.213.21" ], "time_ms": 84.36 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "141.193.213.20", "141.193.213.21" ], "time_ms": 67.25 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "141.193.213.20", "141.193.213.21" ], "time_ms": 116.34 } ] } }, "ssl": { "available": true, "issuer": "Google Trust Services", "subject": "mtsu.edu", "valid_from": "2026-07-19T15:50:05-05:00", "valid_to": "2026-10-17T16:49:58-05:00", 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"origin", "strict-transport-security": "max-age=63072000; includeSubDomains", "x-content-type-options": "nosniff", "x-frame-options": "SAMEORIGIN", "x-xss-protection": "1; mode=block", "cf-cache-status": "DYNAMIC", "cf-ray": "a2889e8a7c5b400a-STL", "alt-svc": "h3=\":443\"; ma=86400", "vary": "Accept-Encoding,Cookie", "last-modified": "Sun, 09 Aug 2026 12:45:16 GMT", "link": "; rel=shortlink", "x-powered-by": "WP Engine", "x-cacheable": "SHORT", "cache-control": "max-age=600, must-revalidate", "x-cache": "HIT: 49", "x-cache-group": "normal" }, "security_checks": { "strict-transport-security": true, "content-security-policy": false, "x-content-type-options": true, "x-frame-options": true, "referrer-policy": true, "permissions-policy": true, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "cloudflare", "powered_by": "WP Engine" }, "webpage": { "url": "https://www.mtsu.edu/", "title": "MTSU - Middle Tennessee State University", "description": "MTSU is the most affordable public university in Tennessee, serving first-gen students and vets. #1 producer of greater Nashville grads.", "success": true, "error": "", "status": 206 }, "network": { "141.193.213.21": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" }, "141.193.213.20": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "mtsu-edu.mail.protection.outlook.com", "ports": [ { "port": 25, "open": false, "time_ms": 24.4, "banner": "", "error": "Network is unreachable" }, { "port": 465, "open": false, "time_ms": 4037.1, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4041.4, "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": 90.29 }