Get a snapshot of 21run.fr's online performance, security posture, and technology profile.
21run.fr Website Overview & Technology Report
The 21run.fr domain, with a trust score of 61, is likely safe for users to access, indicating a moderate level of trustworthiness. This assessment is supported by the domain's moderate page size of 4KB, which suggests a well-optimized website. The 16553ms response time is relatively fast, further reinforcing the domain's credibility.
Evaluate trustworthiness based on age, SSL, email authentication, security headers, and blacklist status across 8 threat databases.
21run.fr Trust Score & Safety Analysis
The trust score of 61 and the verdict of "Likely Safe" suggest that 21run.fr is a trustworthy domain. The presence of Cloudflare, a well-established content delivery network (CDN), provides an additional layer of security and reliability. The domain's SSL certificate, issued by Google Trust Services, adds to its trustworthiness.
Security Headers
Blacklist Checks 8/8 Clean ✓
Discover every technology powering this website — from CMS and frameworks to analytics, payments, and marketing tools.
21run.fr Technology Stack & Detected Technologies
21run.fr is powered by Cloudflare, a popular CDN that provides enhanced security and performance. The use of TLS 1.3, a modern encryption protocol, ensures secure connections between users and the website. The domain's compression is optimized for gzip, reducing page load times and improving overall performance.
Response time, compression, CDN usage, Core Web Vitals, and environmental impact metrics for 21run.fr.
21run.fr Performance & Web Vitals Report
21run.fr delivers its homepage in 16553ms (server response time), which is considered slow by industry standards. The total page weight is 4 KB, and we detected 3 resource requests loading assets from 1 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 1 CSS files and 0 out of 0 JavaScript files are minified. Minifying the remaining 1 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 21run.fr produces approximately 0.0g 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 4 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for 21run.fr. 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.
Complete DNS record analysis including email authentication (SPF, DMARC, DKIM), registrar details, and subdomain discovery.
21run.fr DNS Records, Email Authentication & Domain Registration
The domain's IP address, 172.67.134.51, is a Cloudflare-provided IP, indicating that the website is likely hosted on a Cloudflare-managed infrastructure. The MX record, 21run.fr, suggests that the domain uses a custom mail server or a cloud-based email service. The absence of registrar information and SPF and DMARC records may indicate that the domain is not heavily invested in email security.
Subdomains 2 found
TXT Records / Service Verifications 1
Content structure, media assets, cookie usage, payment methods, and social media presence for 21run.fr.
21run.fr Page Content Analysis
The homepage of 21run.fr contains 127 words of visible text content. This is a relatively short page — adding more descriptive content could improve search engine visibility. The page is structured with 3 H2 headings, 0 H3 headings, 0 H4 headings. The link structure consists of 0 internal links pointing to other pages on the same domain and 1 external link pointing to third-party websites. There are 0 external JavaScript files, 1 CSS stylesheets, and 0 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.
Evaluate on-page SEO factors including meta tags, Schema.org markup, content metrics, social presence, and environmental impact.
21run.fr SEO Analysis, Meta Tags & Content
The domain's word count of 127 and the lack of images (0) suggest that the website may prioritize content over visual appeal. The title, "Attention Required! | Cloudflare", is brief and to the point, indicating that the website may focus on providing clear and concise information to users. The 4KB page size, although moderate, may be an opportunity for the website to optimize its content and improve its search engine rankings.
Google SERP Preview
META TAGS & SCHEMA.ORG
META TAGS
SCHEMA.ORG & SOCIAL
Extended intelligence from breach databases, web archives, green hosting verification, and app store presence.
21run.fr Extended Intelligence & Enrichment Data
SSL Certificate
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