3721nutrition.com

We performed a comprehensive analysis of 3721nutrition.com on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 17161ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 283 KB, and the site is served behind a CDN (Content Delivery Network). 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 70/100 (good). The following security headers are properly configured: Content-Security-Policy, Strict-Transport-Security (HSTS), X-Frame-Options, and X-Content-Type-Options. However, the site is missing 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 8 technologies across 8 categories powering 3721nutrition.com. The detected stack includes Shopify, Google Analytics 4, Klaviyo, Shop Pay, reCAPTCHA v3, Amazon CloudFront, YouTube Embed, and jQuery. The primary e-commerce platform is Shopify. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, 3721nutrition.com receives an overall trust score of 73/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, 3721nutrition.com receives a trust score of 73/100, 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, HSTS (HTTP Strict Transport Security) enforcement preventing protocol downgrade attacks, SPF (Sender Policy Framework) email authentication preventing email spoofing, and DMARC email authentication with a none policy. Areas of concern include: 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 3721nutrition.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 3721nutrition.com and identified 8 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. Ecommerce: Shopify — powers the online store and shopping functionality for 3721nutrition.com. Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for 3721nutrition.com. Email Marketing: Klaviyo — manages email campaigns and subscriber lists for 3721nutrition.com. Payments: Shop Pay — processes payment transactions for 3721nutrition.com. Security: reCAPTCHA v3 — provides security features like bot detection and CAPTCHA for 3721nutrition.com. CDN: Amazon CloudFront — accelerates content delivery by caching assets at edge locations worldwide for 3721nutrition.com. Video: YouTube Embed — provides video hosting and playback for 3721nutrition.com. JavaScript Library: jQuery — provides utility functions and DOM manipulation for 3721nutrition.com. We also extracted the following tracking identifiers: Google Analytics 4 Measurement ID G-HETXV05PJQ. These IDs can be used to identify other websites operated by the same organization.

3721nutrition.com delivers its homepage in 17161ms (server response time), which is considered slow by industry standards. The total page weight is 283 KB, and we detected 249 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: 0 out of 73 CSS files and 2 out of 26 JavaScript files are minified. Minifying the remaining 97 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. The site is served through a Content Delivery Network (CDN), which caches static assets at edge servers around the world. This means visitors from different geographic regions receive content from the nearest edge server, significantly reducing latency. CDN usage is particularly important for websites with a global audience, as it can reduce page load times by 40-60% for distant visitors. From an environmental perspective, each page view of 3721nutrition.com produces approximately 0.14g 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 283 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for 3721nutrition.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.

3721nutrition.com resolves to the IPv4 address 23.227.38.65 and also supports IPv6 (2620:127:f00f:5::), demonstrating modern network infrastructure readiness. The domain has 1 A record(s) configured. The domain name system is managed by 2 name servers: ns1.siteground.net and ns2.siteground.net. 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 3721nutrition.com is handled by Zoho Mail with 3 MX records configured: mx.zoho.eu, mx2.zoho.eu, and mx3.zoho.eu. 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 none policy — a monitoring-only setting that doesn't enforce any action on unauthorized emails. 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 3721nutrition.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 1 active subdomains for 3721nutrition.com: www.3721nutrition.com. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of 3721nutrition.com contains 428 words of visible text content. This is a moderate amount of content. The page is structured with 20 H2 headings, 40 H3 headings, 0 H4 headings. The page includes 28 images. 9 images (32%) 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 68% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 91 internal links pointing to other pages on the same domain and 12 external links pointing to third-party websites. There are 26 external JavaScript files, 73 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) and Schema.org structured data (Organization, SearchAction, and WebSite). Notable missing features: robots.txt. Adding these could improve search engine discoverability and rich result eligibility. We detected the following payment methods accepted on 3721nutrition.com: Visa, Mastercard, American Express, UnionPay, Apple Pay, Google Pay, and Shop Pay. Offering multiple payment options including credit cards and digital wallets improves customer trust and can increase conversion rates. The website has social media presence across 3 platforms: Facebook (@3721nutrition), Instagram (@3721protein), and Youtube (@3721Nutrition). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

The title tag for 3721nutrition.com is well-optimized at 32 characters: "3721 Nutrition | 優質運動營養品牌 | 香港製造". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation. The meta description is 124 characters (well-optimized): "3721 Nutrition 為你提供優質運動營養產品，專注香港製造，滿足健身愛好者及運動員的需求。無論是蛋白粉、健身補充劑，還是運動營養品，我們的產品均以高品質、低糖配方為基礎，幫助你提升運動表現，促進肌肉修復。立即選購，為你的健身目標注...". 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://3721nutrition.com/, preventing duplicate content issues, the page language is declared as zh-tw, and a favicon is configured. Open Graph meta tags are configured with 4/4 recommended fields: OG title ("3721 Nutrition | 優質運動營養品牌 | 香港製造..."), OG description, 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. 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. The site implements Schema.org structured data with the following types: Organization, SearchAction, and WebSite. Structured data helps search engines understand the page content and can enable rich results (featured snippets, knowledge panels, star ratings) in Google search results, which can significantly increase click-through rates.