sullivan.edu

We performed a comprehensive analysis of sullivan.edu on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 19777ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 112 KB. Warning: The website does not have a valid SSL certificate. Visitors may see security warnings in their browser, and data transmitted to and from this website is not encrypted. The security headers analysis reveals a score of 0/100 (poor). No security headers are configured, which is a significant security concern. However, the site is missing Content-Security-Policy, Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy, which could expose the site and its users to cross-site scripting (XSS), clickjacking, and other web-based attacks. Our technology detection scan identified 4 technologies across 4 categories powering sullivan.edu. The detected stack includes Google Tag Manager, reCAPTCHA v3, Adobe Fonts, and Vimeo. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, sullivan.edu receives an overall trust score of 61/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, sullivan.edu receives a trust score of 61/100, which places it in the "Likely Safe" category. This score is calculated by evaluating multiple factors including SSL certificate validity, domain registration history, email authentication protocols, security header configuration, and blacklist status across major threat intelligence databases. The analysis identified several positive trust signals: a valid HTTPS connection protecting data in transit, SPF (Sender Policy Framework) email authentication preventing email spoofing, DMARC email authentication with a quarantine policy, and DKIM (DomainKeys Identified Mail) providing cryptographic email verification. Areas of concern include: the absence of a Content-Security-Policy header, which leaves the site more vulnerable to cross-site scripting (XSS) attacks, no X-Frame-Options header, which could allow the site to be embedded in malicious iframes (clickjacking), missing Referrer-Policy, potentially leaking URL information to third parties, the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity, and DNSSEC is not enabled, leaving DNS queries vulnerable to spoofing attacks. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved. We checked sullivan.edu against 8 major blacklist databases including Google Safe Browsing, Phishtank, Urlhaus, Openphish, Dnsfilter, Spamhaus Dbl, Surbl, and Virustotal. The domain passed all 8 checks with a clean status, meaning it has not been flagged for phishing, malware distribution, spam, or other malicious activities by any of the tested threat intelligence providers.

Our technology detection engine scanned sullivan.edu and identified 4 distinct technologies across 4 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for sullivan.edu. Security: reCAPTCHA v3 — provides security features like bot detection and CAPTCHA for sullivan.edu. Fonts: Adobe Fonts — delivers web fonts for typography for sullivan.edu. Video: Vimeo — provides video hosting and playback for sullivan.edu. We also extracted the following tracking identifiers: Google Tag Manager container GTM-TJQF29G. These IDs can be used to identify other websites operated by the same organization.

sullivan.edu delivers its homepage in 19777ms (server response time), which is considered slow by industry standards. The total page weight is 112 KB, and we detected 53 resource requests loading assets from 10 third-party domains. A high number of third-party domains can significantly impact page load time due to additional DNS lookups and TLS handshakes required for each domain. The website uses Gzip compression for text-based assets, achieving an estimated 60.0% reduction in transfer size. This reduces bandwidth usage and improves page load times, especially for visitors on slower connections. Asset minification status: 0 out of 2 CSS files and 0 out of 2 JavaScript files are minified. Minifying the remaining 4 unminified file(s) could further reduce page weight by 10-30% for those assets. Minification is a best practice that reduces download sizes without affecting functionality. From an environmental perspective, each page view of sullivan.edu produces approximately 0.05g of CO₂, earning a carbon rating of A. This places the website among the cleanest on the web, demonstrating efficient use of server resources and optimized content delivery. For reference, the average web page produces about 0.5g of CO₂ per page view. The page weight of 112 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for sullivan.edu. This typically means the site doesn't have enough real-world Chrome user traffic to generate statistically significant field data, or the domain is not included in the CrUX dataset. Core Web Vitals (LCP, INP, CLS) are important Google ranking factors that measure real user experience.

sullivan.edu resolves to the IPv4 address 3.234.13.129 and also supports IPv6 (2600:1f18:79f1:a261:914e:c674:325b:36d2), demonstrating modern network infrastructure readiness. The domain has 2 A record(s) configured. The domain name system is managed by 4 name servers: ns1-09.azure-dns.com, ns2-09.azure-dns.net, ns3-09.azure-dns.org, and ns4-09.azure-dns.info. Having 4 name servers provides good redundancy — if one fails, the others can continue serving DNS queries. The choice of name servers often indicates the DNS hosting provider or CDN service being used. Email for sullivan.edu is handled by Microsoft 365 with 1 MX records configured: sullivan-edu.mail.protection.outlook.com. Multiple MX records provide failover redundancy — if the primary mail server is unavailable, email will be routed to the next available server. SPF (Sender Policy Framework) is configured, which specifies which mail servers are authorized to send email on behalf of this domain. This helps prevent email spoofing and improves email deliverability. DMARC (Domain-based Message Authentication, Reporting and Conformance) is configured with a quarantine policy — a moderate setting, directing unauthorized emails to spam/junk folders. DKIM (DomainKeys Identified Mail) is configured, adding a cryptographic signature to outgoing emails that receiving servers can verify to confirm the email hasn't been tampered with in transit. DNSSEC is not enabled for sullivan.edu. While not critical for most websites, DNSSEC adds an important security layer by ensuring DNS responses haven't been tampered with during transit. Enabling DNSSEC is recommended for domains handling sensitive data or financial transactions. Our subdomain enumeration scan discovered 7 active subdomains for sullivan.edu: apps.sullivan.edu, blog.sullivan.edu, mail.sullivan.edu, portal.sullivan.edu, smtp.sullivan.edu, staging.sullivan.edu, and www.sullivan.edu. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of sullivan.edu contains 487 words of visible text content. This is a moderate amount of content. The page is structured with 10 H2 headings, 3 H3 headings, 0 H4 headings. The page includes 9 images. All images have proper alt text attributes ✓, which is excellent for both accessibility (screen readers) and SEO (search engines can understand image content). The link structure consists of 24 internal links pointing to other pages on the same domain and 7 external links pointing to third-party websites. There are 2 external JavaScript files, 2 CSS stylesheets, and 1 iframes on the page. Notable missing features: XML Sitemap, robots.txt, and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility. The website has social media presence across 2 platforms: Facebook (@SullivanUniversity) and Instagram (@sullivan.university). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

The title tag for sullivan.edu is good at 61 characters: "Sullivan University | School of Doing | Experiential Learning". The length is acceptable, though it may be slightly truncated in some search result displays. The meta description is 159 characters (acceptable): "With Sullivan University programs, experiential learning goes beyond the classroom to roll up your sleeves for hands-on ...". Google typically displays up to 155-160 characters of the meta description in search results. A compelling meta description with a clear call-to-action can significantly improve click-through rates from search results. The page language is declared as en and a favicon is configured. Open Graph meta tags are configured with 3/4 recommended fields: OG title ("Sullivan University | School of Doing | Experiential Learnin..."), OG description, OG image (social sharing thumbnail), These tags control how the page appears when shared on Facebook, LinkedIn, and other social media platforms that support the Open Graph protocol. A Twitter Card of type summary_large_image is configured, which controls how links appear when shared on Twitter/X. The "summary_large_image" type displays a large image preview, which typically generates higher engagement rates than the basic card type.