tuyensinh247.com

We performed a comprehensive analysis of tuyensinh247.com on 2026-06-30. The website returned an HTTP 200 status code with a server response time of 8875ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 319 KB. The website uses a secure HTTPS connection with a valid SSL certificate issued by GlobalSign nv-sa (OV type). The connection is encrypted using TLS 1.2 with the ECDHE-RSA-AES256-GCM-SHA384 cipher suite and sha256WithRSAEncryption signature algorithm. The certificate covers 2 domain(s) (Subject Alternative Names) and expires on 2026-11-30, which is 153 days from now. 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 9 technologies across 8 categories powering tuyensinh247.com. The detected stack includes Microsoft Clarity, Google Tag Manager, Meta Pixel, Google Ads, Cloudflare, Google Fonts, YouTube Embed, jQuery 1.7.2., and Font Awesome. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, tuyensinh247.com receives an overall trust score of 68/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, tuyensinh247.com receives a trust score of 68/100, 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, a valid SSL certificate issued by GlobalSign nv-sa with 153 days until expiration, SPF (Sender Policy Framework) email authentication preventing email spoofing, and DMARC email authentication with a reject policy — the strongest available setting. 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 tuyensinh247.com 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 tuyensinh247.com and identified 9 distinct technologies across 8 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. Analytics: Microsoft Clarity — tracks visitor behavior and provides traffic insights for tuyensinh247.com. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for tuyensinh247.com. Advertising: Meta Pixel and Google Ads — handles advertising pixel tracking and conversion measurement for tuyensinh247.com. CDN: Cloudflare — accelerates content delivery by caching assets at edge locations worldwide for tuyensinh247.com. Fonts: Google Fonts — delivers web fonts for typography for tuyensinh247.com. Video: YouTube Embed — provides video hosting and playback for tuyensinh247.com. JavaScript Library: jQuery (version 1.7.2.) — provides utility functions and DOM manipulation for tuyensinh247.com. Icon Set: Font Awesome — provides additional functionality for tuyensinh247.com. We also extracted the following tracking identifiers: Google Tag Manager container GTM-P374N4F and Meta (Facebook) Pixel ID 1445046295739925. These IDs can be used to identify other websites operated by the same organization.

tuyensinh247.com delivers its homepage in 8875ms (server response time), which is considered slow by industry standards. The total page weight is 319 KB, and we detected 760 resource requests loading assets from 21 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: 2 out of 10 CSS files and 5 out of 15 JavaScript files are minified. Minifying the remaining 18 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 tuyensinh247.com produces approximately 0.16g of CO₂, earning a carbon rating of B. 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 319 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for tuyensinh247.com. 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.

tuyensinh247.com resolves to the IPv4 address 210.211.101.211, 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 2 name servers: amber.ns.cloudflare.com and giancarlo.ns.cloudflare.com. Having 2 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 tuyensinh247.com is handled by Google Workspace with 5 MX records configured: aspmx.l.google.com, alt1.aspmx.l.google.com, and alt2.aspmx.l.google.com and 2 more. 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 reject policy — the strongest setting, instructing receiving servers to reject unauthorized emails entirely. 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 tuyensinh247.com. 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.

The homepage of tuyensinh247.com contains 4,252 words of visible text content. This is a substantial amount of content that provides good opportunities for search engine indexing. The page is structured with 0 H2 headings, 46 H3 headings, 0 H4 headings. The page includes 163 images. 134 images (82%) 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 18% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 503 internal links pointing to other pages on the same domain and 26 external links pointing to third-party websites. The high number of internal links suggests a well-interconnected site structure, which helps search engines discover and crawl all pages efficiently. There are 15 external JavaScript files, 10 CSS stylesheets, and 4 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages), robots.txt (controls search engine crawling behavior), and Progressive Web App (PWA) manifest (enabling app-like installation). Notable missing features: Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility. The website has social media presence across 1 platforms: Facebook (@tr). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

The title tag for tuyensinh247.com is good at 67 characters: "Tuyensinh247.com - Học trực tuyến cùng Thầy cô giáo giỏi, nổi tiếng". The length is acceptable, though it may be slightly truncated in some search result displays. The meta description is 174 characters (slightly long): "Khoá học online cho tất cả các lớp THPT, THCS, Tiểu học, luyện thi đại học, tốt nghiệp THPT, Đánh giá năng lực, Đánh giá...". 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 canonical url is correctly set to https://tuyensinh247.com, preventing duplicate content issues, the page language is declared as vi, the meta robots directive is set to index,follow, and a favicon is configured. Open Graph meta tags are configured with 4/4 recommended fields: OG title ("Tuyensinh247.com - Học trực tuyến cùng Thầy cô giáo giỏi, nổ..."), OG description, OG image (social sharing thumbnail), OG type (article). These tags control how the page appears when shared on Facebook, LinkedIn, and other social media platforms that support the Open Graph protocol. The meta keywords tag contains 9 terms including hoc truc tuyen, hoc online, tu lop 12 den lop 1, luyen thi dai hoc, and luyen thi dai hoc truc tuyen. Note: Google has officially confirmed that it does not use the meta keywords tag as a ranking signal. However, some other search engines (Bing, Yandex) may still reference it.