3athlon.nl Website Overview & Technology Report
🤖 AI Summary
We performed a comprehensive analysis of 3athlon.nl on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 17572ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 413 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 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 10 technologies across 10 categories powering 3athlon.nl. The detected stack includes WordPress 7.0, WooCommerce, React, Bootstrap, Google Analytics 4, Mailchimp, reCAPTCHA v3, Google Fonts, jQuery, and Font Awesome. The primary e-commerce platform is WooCommerce. The UI is built with React.
Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, 3athlon.nl receives an overall trust score of 60/100, classified as "Likely Safe".
HTTP Response
Status200 OK
Response Time17572ms
ProtocolHTTP/2
Page Size413 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
ServerApache/2
Total Requests592
3rd Party Domains27
RedirectNone
Detected Technologies (10)
• WordPress
🛒 WooCommerce
⚛️ React
🎨 Bootstrap
📊 Google Analytics 4
📧 Mailchimp
🔒 reCAPTCHA v3
🔤 Google Fonts
📦 jQuery
🎯 Font Awesome
Security Headers
✗
Content-Security-Policy
Not set
✗
Strict-Transport-Security (HSTS)
Not set
✗
X-Frame-Options
Not set
✗
X-Content-Type-Options
Not set
✗
Referrer-Policy
Not set
✗
Permissions-Policy
Not set
SSL Certificate
IssuerLet's Encrypt
Issuer FullcountryName=US, organizationName=Let's Encrypt, commonName=YR1
SubjectcommonName=3athlon.nl
Type—
TLS VersionTLS 1.2
Cipher SuiteECDHE-RSA-AES128-GCM-SHA256
Algorithm—
Issued—
Expires— (? days)
SANs—
3athlon.nl Trust Score & Safety Analysis
🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, 3athlon.nl receives a trust score of 60/100, 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, SPF (Sender Policy Framework) email authentication preventing email spoofing, DKIM (DomainKeys Identified Mail) providing cryptographic email verification, and DNSSEC providing authenticated DNS responses.
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, and the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved.
We checked 3athlon.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.
Trust Signals
✅ Valid HTTPS
✅ SPF configured
✅ DKIM configured
✅ DNSSEC enabled
✅ Sitemap.xml found
✅ Robots.txt found
⚠️ Missing Content-Security-Policy
⚠️ Missing X-Frame-Options
⚠️ Missing Referrer-Policy
Blacklist Checks (8/8 clean)
✓
Google Safe Browsing
clean
✓
Phishtank
clean
✓
Urlhaus
clean
✓
Openphish
clean
✓
Dnsfilter
clean
✓
Spamhaus Dbl
clean
✓
Surbl
clean
✓
Virustotal
clean
3athlon.nl Technology Stack & Detected Technologies
🤖 AI Summary
Our technology detection engine scanned 3athlon.nl and identified 10 distinct technologies across 10 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 (version 7.0) — manages the content and page structure for 3athlon.nl.
Ecommerce: WooCommerce — powers the online store and shopping functionality for 3athlon.nl.
UI Library: React — handles the user interface rendering and component management for 3athlon.nl.
CSS Framework: Bootstrap — provides the styling and responsive layout system for 3athlon.nl.
Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for 3athlon.nl.
Email Marketing: Mailchimp — manages email campaigns and subscriber lists for 3athlon.nl.
Security: reCAPTCHA v3 — provides security features like bot detection and CAPTCHA for 3athlon.nl.
Fonts: Google Fonts — delivers web fonts for typography for 3athlon.nl.
JavaScript Library: jQuery — provides utility functions and DOM manipulation for 3athlon.nl.
Icon Set: Font Awesome — provides additional functionality for 3athlon.nl.
We also extracted the following tracking identifiers: Google Analytics 4 Measurement ID G-HGTSWM5042. These IDs can be used to identify other websites operated by the same organization.
CMS
Ecommerce
UI Library
CSS Framework
Analytics
📊 Google Analytics 4(95%)
Email Marketing
Security
Fonts
JavaScript Library
Icon Set
Tracking IDs
3athlon.nl Performance, Speed & Core Web Vitals
🤖 AI Summary
3athlon.nl delivers its homepage in 17572ms (server response time), which is considered slow by industry standards. The total page weight is 413 KB, and we detected 592 resource requests loading assets from 27 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: 8 out of 30 CSS files and 27 out of 36 JavaScript files are minified. Minifying the remaining 31 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 3athlon.nl produces approximately 0.2g 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 413 KB is the primary factor in this calculation.
Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for 3athlon.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.
Core Web Vitals data not available
Requires CrUX API key configuration
Carbon Footprint
CO₂ per page view0.2g
RatingB
Page Weight & Optimization
HTML Size413 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Total Requests592
3rd Party Domains27
CSS Minified8/30
JS Minified27/36
3athlon.nl DNS Records, Email Authentication & Domain Registration
🤖 AI Summary
3athlon.nl resolves to the IPv4 address 185.40.57.153, 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: ns1.flexwebhosting.nl, ns2.flexwebhosting.nl, and ns3.flexwebhosting.com. 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 3athlon.nl is handled by Google Workspace with 7 MX records configured: aspmx.l.google.com, alt1.aspmx.l.google.com, and alt2.aspmx.l.google.com and 4 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 is not configured, leaving the domain vulnerable to email spoofing and phishing attacks that impersonate this domain. DKIM (DomainKeys Identified Mail) is configured, adding a cryptographic signature to outgoing emails that receiving servers can verify to confirm the email hasn't been tampered with in transit.
DNSSEC is enabled for 3athlon.nl, providing an additional layer of security by cryptographically signing DNS records. This prevents DNS cache poisoning and man-in-the-middle attacks that could redirect visitors to malicious websites.
Our subdomain enumeration scan discovered 25 active subdomains for 3athlon.nl: admin.3athlon.nl, api.3athlon.nl, app.3athlon.nl, apps.3athlon.nl, blog.3athlon.nl, cdn.3athlon.nl, community.3athlon.nl, and dev.3athlon.nl. Plus 17 additional subdomains. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
NS
ns1.flexwebhosting.nl
ns2.flexwebhosting.nl
ns3.flexwebhosting.com
MX
aspmx.l.google.com
alt1.aspmx.l.google.com
alt2.aspmx.l.google.com
aspmx2.googlemail.com
aspmx3.googlemail.com
aspmx4.googlemail.com
aspmx5.googlemail.com
Email & Authentication
MX ProviderGoogle Workspace
Registrar—
Organisation—
Country—
Contact—
Registered—
Expires—
Domain Age—
IPv6 SupportNo
Subdomains (25 found)
admin.3athlon.nl api.3athlon.nl app.3athlon.nl apps.3athlon.nl blog.3athlon.nl cdn.3athlon.nl community.3athlon.nl dev.3athlon.nl developers.3athlon.nl docs.3athlon.nl ftp.3athlon.nl help.3athlon.nl m.3athlon.nl mail.3athlon.nl partners.3athlon.nl portal.3athlon.nl shop.3athlon.nl smtp.3athlon.nl staging.3athlon.nl static.3athlon.nl status.3athlon.nl store.3athlon.nl support.3athlon.nl webmail.3athlon.nl www.3athlon.nl
3athlon.nl Page Content, Images & Accessibility
🤖 AI Summary
The homepage of 3athlon.nl contains 2,356 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, 7 H3 headings, 12 H4 headings, 48 H5, and 0 H6 headings.
The page includes 81 images. 44 images (54%) 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 46% of images have proper alt text — we recommend adding descriptive alt attributes to all images.
The link structure consists of 363 internal links pointing to other pages on the same domain and 88 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 36 external JavaScript files, 30 CSS stylesheets, and 2 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), Schema.org structured data (BreadcrumbList, EntryPoint, ImageObject, ListItem, Organization, PropertyValueSpecification, ReadAction, SearchAction, WebPage, and WebSite), and RSS feed for content syndication.
The website has social media presence across 4 platforms: Facebook (@3athlon.nl), Twitter (@3athlon_nl), Instagram (@3athlon.nl), and Youtube (@UCVEL9A8BhKsnVBmwnyePh-Q). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.
Content Structure
H1—
H2 Tags30
H3 Tags7
H4 Tags12
H5 Tags48
H6 Tags0
Internal Links363
External Links88
Assets & Features
JavaScript Files36
JS Minified27/36
CSS Files30
CSS Minified8/30
Iframes2
Images81
Missing Alt44
SitemapYes ✓
Robots.txtYes ✓
PWANo
AMPNo
RSS FeedYes ✓
Schema.org Types
BreadcrumbListEntryPointImageObjectListItemOrganizationPropertyValueSpecificationReadActionSearchActionWebPageWebSite
Social Media Presence
Facebook: @3athlon.nlTwitter: @3athlon_nlInstagram: @3athlon.nlYoutube: @UCVEL9A8BhKsnVBmwnyePh-Q
3athlon.nl SEO Analysis, Meta Tags & Open Graph
🤖 AI Summary
The title tag for 3athlon.nl is well-optimized at 46 characters: "3athlon.nl - Het triathlonnieuws van Nederland". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation.
The meta description is 195 characters (slightly long): "De grootste triatlon en duatlon nieuws website van Nederland. Wij brengen je alles over de Nederlandse triatleten in de ...". 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://3athlon.nl/, preventing duplicate content issues, the page language is declared as nl-nl, the meta robots directive is set to index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1, and a favicon is configured.
Open Graph meta tags are configured with 4/4 recommended fields: OG title ("3athlon.nl - Het triathlonnieuws van Nederland..."), 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.
The site implements Schema.org structured data with the following types: BreadcrumbList, EntryPoint, ImageObject, ListItem, Organization, PropertyValueSpecification, ReadAction, SearchAction, WebPage, 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.
Google SERP Preview
3athlon.nl - Het triathlonnieuws van Nederland
https://3athlon.nl
De grootste triatlon en duatlon nieuws website van Nederland. Wij brengen je alles over de Nederlandse triatleten in de World Triathlon Series, Ironman, Challenge en natuurlijk in Nederland zelf.
Meta Tags
Title3athlon.nl - Het triathlonnieuws van Nederland...
Title Length46 chars
Meta Desc Length195 chars
H1—
Languagenl-NL
Canonicalhttps://3athlon.nl/
Meta Robotsindex, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Meta Keywordsnot set
Schema.org & Social
Schema TypesBreadcrumbList, EntryPoint, ImageObject, ListItem, Organization, PropertyValueSpecification, ReadAction, SearchAction, WebPage, WebSite
OG Typewebsite
OG ImageSet ✓
Twitter Card—
FaviconSet ✓
Open Graph Preview
3athlon.nl
3athlon.nl - Het triathlonnieuws van Nederland
De grootste triatlon en duatlon nieuws website van Nederland. Wij brengen je alles over de Nederlandse triatleten in de World Triathlon Series, Ironman, Challen