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centrumvooravondonderwijs.be

HTTPS HTTP/2 Gzip Cloudflare Angular Crawled in 19,730ms · June 27, 2026 14:36 UTC

centrumvooravondonderwijs.be Website Overview & Technology Report

🤖 AI Summary
We performed a comprehensive analysis of centrumvooravondonderwijs.be on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 4375ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 326 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 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 5 technologies across 5 categories powering centrumvooravondonderwijs.be. The detected stack includes Angular 18.2.14, Google Tag Manager, Cloudflare, Vimeo, and Font Awesome. The site uses Angular as its primary framework (version 18.2.14). Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, centrumvooravondonderwijs.be receives an overall trust score of 61/100, classified as "Likely Safe".
61
/ 100
Trust Score
0
/ 100
Security Headers
HTTP Response
Status200 OK
Response Time4375ms
ProtocolHTTP/2
Page Size326 KB
CompressionGzip
Compression Savings~60.0%
CDNYes ✓
Servercloudflare
Total Requests199
3rd Party Domains12
Redirect1 hop(s)
Detected Technologies (5)
🔧 Angular 🏷️ Google Tag Manager ☁️ Cloudflare 🎬 Vimeo 🎯 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
IssuerGoogle Trust Services
Issuer FullcountryName=US, organizationName=Google Trust Services, commonName=WE1
SubjectcommonName=centrumvooravondonderwijs.be
Type
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_256_GCM_SHA384
Algorithm
Issued
Expires— (? days)
SANs

centrumvooravondonderwijs.be Trust Score & Safety Analysis

🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, centrumvooravondonderwijs.be receives a trust score of 61/100, 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, DMARC email authentication with a quarantine policy, and DKIM (DomainKeys Identified Mail) providing cryptographic email verification. 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 centrumvooravondonderwijs.be 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.
61
/ 100
Likely Safe
Trust Signals
Valid HTTPS
SPF configured
DMARC configured (p=quarantine)
DKIM configured
⚠️ DNSSEC not 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

centrumvooravondonderwijs.be Technology Stack & Detected Technologies

🤖 AI Summary
Our technology detection engine scanned centrumvooravondonderwijs.be and identified 5 distinct technologies across 5 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. Framework: Angular (version 18.2.14) — provides the application framework and routing for centrumvooravondonderwijs.be. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for centrumvooravondonderwijs.be. CDN: Cloudflare — accelerates content delivery by caching assets at edge locations worldwide for centrumvooravondonderwijs.be. Video: Vimeo — provides video hosting and playback for centrumvooravondonderwijs.be. Icon Set: Font Awesome — provides additional functionality for centrumvooravondonderwijs.be. We also extracted the following tracking identifiers: Google Tag Manager container GTM-WS9WB5M. These IDs can be used to identify other websites operated by the same organization.
Framework
🔧 Angular 18.2.14(100%)
Tag Manager
🏷️ Google Tag Manager(95%)
CDN
☁️ Cloudflare(100%)
Video
🎬 Vimeo(95%)
Icon Set
🎯 Font Awesome(95%)
Tracking IDs
gtm_idGTM-WS9WB5M

centrumvooravondonderwijs.be Performance, Speed & Core Web Vitals

🤖 AI Summary
centrumvooravondonderwijs.be delivers its homepage in 4375ms (server response time), which is considered slow by industry standards. The total page weight is 326 KB, and we detected 199 resource requests loading assets from 12 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 4 CSS files and 1 out of 6 JavaScript files are minified. Minifying the remaining 9 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 centrumvooravondonderwijs.be produces approximately 0.16g 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 326 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for centrumvooravondonderwijs.be. 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 view0.16g
RatingB
Page Weight & Optimization
HTML Size326 KB
CompressionGzip
Compression Savings~60.0%
CDNYes ✓
Total Requests199
3rd Party Domains12
CSS Minified0/4
JS Minified1/6

centrumvooravondonderwijs.be DNS Records, Email Authentication & Domain Registration

🤖 AI Summary
centrumvooravondonderwijs.be resolves to the IPv4 address 104.21.42.167 and also supports IPv6 (2606:4700:3031::ac43:a3b0), demonstrating modern network infrastructure readiness. The domain has 2 A record(s) configured. The domain name system is managed by 2 name servers: sneh.ns.cloudflare.com and walt.ns.cloudflare.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. Email for centrumvooravondonderwijs.be is handled by Google Workspace with 5 MX records configured: aspmx.l.google.com, alt1.aspmx.l.google.com, and alt2.aspmx.l.google.com and 2 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 (Domain-based Message Authentication, Reporting and Conformance) is configured with a quarantine policy — a moderate setting, directing unauthorized emails to spam/junk folders. 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 not enabled for centrumvooravondonderwijs.be. 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 centrumvooravondonderwijs.be: www.centrumvooravondonderwijs.be. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
A
104.21.42.167
172.67.163.176
AAAA
2606:4700:3031::ac43:a3b0
NS
sneh.ns.cloudflare.com
walt.ns.cloudflare.com
MX
aspmx.l.google.com
alt1.aspmx.l.google.com
alt2.aspmx.l.google.com
aspmx2.googlemail.com
aspmx3.googlemail.com
Email & Authentication
SPF
DMARC p=quarantine
DKIM
DNSSEC
MX ProviderGoogle Workspace
Registrar
Organisation
Country
Contact
Registered
Expires
Domain Age
IPv6 SupportYes ✓
Subdomains (1 found)
www.centrumvooravondonderwijs.be

centrumvooravondonderwijs.be Page Content, Images & Accessibility

🤖 AI Summary
The homepage of centrumvooravondonderwijs.be contains 730 words of visible text content. This is a moderate amount of content. The page is structured with 7 H2 headings, 0 H3 headings, 20 H4 headings, 0 H5, and 9 H6 headings. The page includes 34 images. 8 images (24%) 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 76% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 142 internal links pointing to other pages on the same domain and 6 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 6 external JavaScript files, 4 CSS stylesheets, and 5 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages) and robots.txt (controls search engine crawling behavior). Notable missing features: Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility. We detected the following payment methods accepted on centrumvooravondonderwijs.be: Discover. 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 (@CentrumVoorAvondonderwijs), Instagram (@centrumvooravondonderwijs), and Tiktok (@avondonderwijs). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.
730
Words
34
Images
76%
Alt Text Score
326
Page Size (KB)
Content Structure
H1Centrum Voor Avondonderwijs
H2 Tags7
H3 Tags0
H4 Tags20
H5 Tags0
H6 Tags9
Internal Links142
External Links6
Assets & Features
JavaScript Files6
JS Minified1/6
CSS Files4
CSS Minified0/4
Iframes5
Images34
Missing Alt8
SitemapYes ✓
Robots.txtYes ✓
PWANo
AMPNo
RSS FeedNo
Payment Methods Detected
💳 Discover
Social Media Presence
Facebook: @CentrumVoorAvondonderwijsInstagram: @centrumvooravondonderwijsTiktok: @avondonderwijs

centrumvooravondonderwijs.be SEO Analysis, Meta Tags & Open Graph

🤖 AI Summary
The title tag for centrumvooravondonderwijs.be is good at 27 characters: "Centrum voor Avondonderwijs". The length is acceptable, though it may be slightly truncated in some search result displays. The meta description is 218 characters (slightly long): "Het Centrum voor Avondonderwijs is een professionele onderwijsinstelling voor volwassenen. Ons aanbod bestaat uit meer d...". 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 page language is declared as en and a favicon is configured. Open Graph meta tags are configured with 2/4 recommended fields: OG title ("Centrum voor Avondonderwijs..."), OG description, 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 12 terms including Centrum voor Avondonderwijs, CVA, CVAV, avondschool, and groepsles. 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.
Google SERP Preview
Centrum voor Avondonderwijs
https://centrumvooravondonderwijs.be
Het Centrum voor Avondonderwijs is een professionele onderwijsinstelling voor volwassenen. Ons aanbod bestaat uit meer dan 350 praktijk- en beroepsgerichte opleidingen, gegeven door vakexperten met jarenlange ervaring.
Meta Tags
TitleCentrum voor Avondonderwijs...
Title Length27 chars
Meta Desc Length218 chars
H1Centrum Voor Avondonderwijs
Languageen
Canonical
Meta Robotsnot set
Meta KeywordsCentrum voor Avondonderwijs, CVA, CVAV, avondschool, groepsl...
Schema.org & Social
Schema Types
OG Type
OG ImageNot set
Twitter Card
FaviconSet ✓