otoviethan.com.vn

🤖 AI Summary

After conducting a thorough safety and legitimacy analysis, otoviethan.com.vn receives a trust score of 56/100, which places it in the "Caution Advised" 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 and SPF (Sender Policy Framework) email authentication preventing email spoofing. 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), 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 otoviethan.com.vn 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.

🤖 AI Summary

Our technology detection engine scanned otoviethan.com.vn and identified 7 distinct technologies across 7 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. CSS Framework: Bootstrap — provides the styling and responsive layout system for otoviethan.com.vn. Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for otoviethan.com.vn. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for otoviethan.com.vn. CDN: Cloudflare — accelerates content delivery by caching assets at edge locations worldwide for otoviethan.com.vn. Fonts: Google Fonts — delivers web fonts for typography for otoviethan.com.vn. JavaScript Library: jQuery — provides utility functions and DOM manipulation for otoviethan.com.vn. Icon Set: Font Awesome — provides additional functionality for otoviethan.com.vn. We also extracted the following tracking identifiers: Google Analytics 4 Measurement ID G-5V0XEMBNWY and Google Tag Manager container GTM-KWH5494. These IDs can be used to identify other websites operated by the same organization.

🤖 AI Summary

otoviethan.com.vn delivers its homepage in 2283ms (server response time), which is considered slow by industry standards. The total page weight is 98 KB, and we detected 416 resource requests loading assets from 11 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: 4 out of 9 CSS files and 10 out of 13 JavaScript files are minified. Minifying the remaining 8 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 otoviethan.com.vn 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 98 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for otoviethan.com.vn. 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.

🤖 AI Summary

otoviethan.com.vn resolves to the IPv4 address 103.92.31.174, but does not support IPv6. IPv6 adoption is increasingly important as IPv4 address space becomes exhausted, and some ISPs and regions are transitioning to IPv6-only connectivity. The domain has 1 A record(s) configured. The domain name system is managed by 3 name servers: NS4.TENTEN.vn, NS5.TENTEN.vn, and NS6.TENTEN.vn. Having 3 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 otoviethan.com.vn is handled by com.vn with 1 MX records configured: mail.otoviethan.com.vn. 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 is not configured, leaving the domain vulnerable to email spoofing and phishing attacks that impersonate this domain. DKIM was not detected. Without DKIM, recipients cannot cryptographically verify that emails claiming to be from this domain are authentic. DNSSEC is not enabled for otoviethan.com.vn. 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 25 active subdomains for otoviethan.com.vn: admin.otoviethan.com.vn, api.otoviethan.com.vn, app.otoviethan.com.vn, apps.otoviethan.com.vn, blog.otoviethan.com.vn, cdn.otoviethan.com.vn, community.otoviethan.com.vn, and dev.otoviethan.com.vn. Plus 17 additional subdomains. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

🤖 AI Summary

The homepage of otoviethan.com.vn contains 961 words of visible text content. This is a moderate amount of content. The page is structured with 0 H2 headings, 0 H3 headings, 4 H4 headings. The page includes 298 images. 298 images (100%) are missing alt text attributes, which is a significant concern for both accessibility and SEO. Screen readers rely on alt text to describe images to visually impaired users, and search engines use alt text to understand image content. Only 0% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 66 internal links pointing to other pages on the same domain and 8 external links pointing to third-party websites. There are 13 external JavaScript files, 9 CSS stylesheets, and 1 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages). Notable missing features: 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 3 platforms: Facebook (@otoviethan.com.vn), Instagram (@viethan_usedcar), and Youtube (@viethanusedcar8071). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

🤖 AI Summary

The title tag for otoviethan.com.vn is too long at 81 characters: "Mua bán xe ô tô cũ, ô tô điện lướt, ô tô xăng, Điện Vinfast cũ trả góp tại TP.HC...". At 81 characters, the title will likely be truncated in Google search results (recommended: 50-60 characters). Consider shortening it while keeping the most important keywords at the beginning. No meta description is configured for otoviethan.com.vn. This is a critical SEO oversight — without a meta description, Google will auto-generate a snippet from page content, which may not accurately represent the page or entice users to click. Adding a unique, compelling meta description of 120-155 characters is strongly recommended. The page language is declared as vi and a favicon is configured. Open Graph meta tags are configured with 2/4 recommended fields: OG image (social sharing thumbnail), OG type (website). These tags control how the page appears when shared on Facebook, LinkedIn, and other social media platforms that support the Open Graph protocol.

🤖 AI Summary

Related domain discovery works by finding other websites that share the same IP address, Google Tag Manager container ID, Google Analytics property, or advertising pixel IDs with otoviethan.com.vn. This data becomes available after batch-crawling the domain database — individual domain lookups cannot populate this section. We extracted the following tracking IDs that can be used for cross-referencing: ga4_id: G-5V0XEMBNWY, gtm_id: GTM-KWH5494.

🤖 AI Summary

This section shows additional intelligence about otoviethan.com.vn including data breach history (via HaveIBeenPwned), web archive history (Wayback Machine), green/eco-friendly hosting status, and mobile app presence in the iOS App Store.