hoavanshz.com

🤖 AI Summary

After conducting a thorough safety and legitimacy analysis, hoavanshz.com 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), 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 hoavanshz.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.

🤖 AI Summary

Our technology detection engine scanned hoavanshz.com 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 hoavanshz.com. Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for hoavanshz.com. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for hoavanshz.com. Advertising: TikTok Pixel — handles advertising pixel tracking and conversion measurement for hoavanshz.com. CDN: StackPath — accelerates content delivery by caching assets at edge locations worldwide for hoavanshz.com. JavaScript Library: jQuery (version 3.4.1.) — provides utility functions and DOM manipulation for hoavanshz.com. Icon Set: Font Awesome — provides additional functionality for hoavanshz.com. We also extracted the following tracking identifiers: Google Tag Manager container GTM-NJQ73F9 and TikTok Pixel ID CPP7K6RC77UE4CLNP4RG. These IDs can be used to identify other websites operated by the same organization.

🤖 AI Summary

hoavanshz.com delivers its homepage in 6723ms (server response time), which is considered slow by industry standards. The total page weight is 362 KB, and we detected 287 resource requests loading assets from 9 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 3 CSS files and 12 out of 19 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 hoavanshz.com produces approximately 0.18g 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 362 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for hoavanshz.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.

🤖 AI Summary

hoavanshz.com resolves to the IPv4 address 27.0.12.27, 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: ns1.matbao.com and ns2.matbao.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. 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 hoavanshz.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. Our subdomain enumeration scan discovered 25 active subdomains for hoavanshz.com: admin.hoavanshz.com, api.hoavanshz.com, app.hoavanshz.com, apps.hoavanshz.com, blog.hoavanshz.com, cdn.hoavanshz.com, community.hoavanshz.com, and dev.hoavanshz.com. 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 hoavanshz.com contains 3,202 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 30 H2 headings, 2 H3 headings, 0 H4 headings, 1 H5, and 0 H6 headings. The page includes 72 images. 1 images (1%) 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 99% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 177 internal links pointing to other pages on the same domain and 8 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 19 external JavaScript files, 3 CSS stylesheets, and 3 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 (@hoavanshz), Instagram (@trungtamhoavanshz), and Tiktok (@trungtamtienghoashz). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

🤖 AI Summary

The title tag for hoavanshz.com is well-optimized at 50 characters: "Trung Tâm Dạy Tiếng Trung SHZ Chất Lượng Tốt Nhất". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation. The meta description is 163 characters (slightly long): "Trung Tâm Dạy Tiếng Trung SHZ (Hoa Văn Thương Mại Thành Phố) chuyên đào tạo tiếng Trung theo chuẩn quốc tế cho cá nhân, ...". 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://hoavanshz.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 ("Trung Tâm Dạy Tiếng Trung SHZ Chất Lượng Tốt Nhất..."), 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 2 terms including Trung tâm dạy tiếng Trung tại TpHCM and trung tam day tieng trung tai tphcm. 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.

🤖 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 hoavanshz.com. 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: gtm_id: GTM-NJQ73F9, tiktok_pixel_id: CPP7K6RC77UE4CLNP4RG.