nisb.nl

We performed a comprehensive analysis of nisb.nl on 2026-07-03. The website returned an HTTP 200 status code with a server response time of 20716ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 126 KB. 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 50/100 (moderate). The following security headers are properly configured: Strict-Transport-Security (HSTS), X-Frame-Options, and X-Content-Type-Options. However, the site is missing Content-Security-Policy, 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 12 technologies across 11 categories powering nisb.nl. The detected stack includes WordPress, React, Vite, Google Analytics 4, Hotjar 3864506, Google Tag Manager, reCAPTCHA v3, Cloudflare, Google Fonts, YouTube Embed, jQuery, and Font Awesome. The UI is built with React. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, nisb.nl receives an overall trust score of 68/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, nisb.nl 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, 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: the absence of a Content-Security-Policy header, which leaves the site more vulnerable to cross-site scripting (XSS) attacks, 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 nisb.nl 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 nisb.nl and identified 12 distinct technologies across 11 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. CMS: WordPress — manages the content and page structure for nisb.nl. UI Library: React — handles the user interface rendering and component management for nisb.nl. Build Tool: Vite — bundles and optimizes the JavaScript and CSS assets for nisb.nl. Analytics: Google Analytics 4 and Hotjar (version 3864506) — tracks visitor behavior and provides traffic insights for nisb.nl. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for nisb.nl. Security: reCAPTCHA v3 — provides security features like bot detection and CAPTCHA for nisb.nl. CDN: Cloudflare — accelerates content delivery by caching assets at edge locations worldwide for nisb.nl. Fonts: Google Fonts — delivers web fonts for typography for nisb.nl. Video: YouTube Embed — provides video hosting and playback for nisb.nl. JavaScript Library: jQuery — provides utility functions and DOM manipulation for nisb.nl. Icon Set: Font Awesome — provides additional functionality for nisb.nl. We also extracted the following tracking identifiers: Google Analytics 4 Measurement ID G-PRN8V51VJQ, Google Tag Manager container GTM-THLSWFV, and Hotjar Site ID 3864506. These IDs can be used to identify other websites operated by the same organization.

nisb.nl delivers its homepage in 20716ms (server response time), which is considered slow by industry standards. The total page weight is 126 KB, and we detected 144 resource requests loading assets from 14 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: 3 out of 7 CSS files and 13 out of 19 JavaScript files are minified. Minifying the remaining 10 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 nisb.nl produces approximately 0.06g 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 126 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for nisb.nl. 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.

nisb.nl resolves to the IPv4 address 77.95.250.94, 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: ns.internlnet.nl, ns3.internl.net, and ns4.internl.net. 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 nisb.nl is handled by nisb.nl with 1 MX records configured: mail.nisb.nl. 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 nisb.nl. 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 nisb.nl contains 767 words of visible text content. This is a moderate amount of content. The page is structured with 20 H2 headings, 5 H3 headings, 0 H4 headings. The page includes 8 images. 4 images (50%) 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 50% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 86 internal links pointing to other pages on the same domain and 7 external links pointing to third-party websites. There are 19 external JavaScript files, 7 CSS stylesheets, and 1 iframes on the page. The site implements the following web standards and features: Schema.org structured data (Organization and WebSite), Progressive Web App (PWA) manifest (enabling app-like installation), and RSS feed for content syndication. Notable missing features: XML Sitemap and robots.txt. Adding these could improve search engine discoverability and rich result eligibility. The website has social media presence across 3 platforms: Instagram (@kenniscentrumsport_bewegen), Linkedin (@kenniscentrum-sport-bewegen), and Youtube (@UCT2kFFGQzViuuBLabGTsD9w). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

The title tag for nisb.nl is good at 28 characters: "Kennis over sport en bewegen". The length is acceptable, though it may be slightly truncated in some search result displays. The meta description is 122 characters (well-optimized): "Wij maken kennis over sport en bewegen toepasbaar voor professionals. Zo helpen we Nederland vitaler en socialer te make...". 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://www.kenniscentrumsportenbewegen.nl/, preventing duplicate content issues, the page language is declared as nl-nl, the meta robots directive is set to index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1, and a favicon is configured. Open Graph meta tags are configured with 4/4 recommended fields: OG title ("Kennis over sport en bewegen..."), 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 is configured, which controls how links appear when shared on Twitter/X. The "summary" 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 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.