atlastheorie.nl

HTTPS HTTP/2 HSTS Gzip Crawled in 57,235ms · June 27, 2026 23:42 UTC

atlastheorie.nl Website Overview & Technology Report

🤖 AI Summary
We performed a comprehensive analysis of atlastheorie.nl on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 23274ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 2 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 20/100 (poor). The following security headers are properly configured: Strict-Transport-Security (HSTS). However, the site is missing Content-Security-Policy, 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. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, atlastheorie.nl receives an overall trust score of 65/100, classified as "Likely Safe".
65
/ 100
Trust Score
20
/ 100
Security Headers
HTTP Response
Status200 OK
Response Time23274ms
ProtocolHTTP/2
Page Size2 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
ServerVercel
Total Requests3
3rd Party Domains0
Redirect1 hop(s)
Detected Technologies (0)
Security Headers
Content-Security-Policy
Not set
Strict-Transport-Security (HSTS)
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=R13
SubjectcommonName=atlastheorie.nl
Type
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_128_GCM_SHA256
Algorithm
Issued
Expires— (? days)
SANs

atlastheorie.nl Trust Score & Safety Analysis

🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, atlastheorie.nl receives a trust score of 65/100, 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, DMARC email authentication with a none policy, 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 atlastheorie.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.
65
/ 100
Likely Safe
Trust Signals
Valid HTTPS
HSTS enabled
SPF configured
DMARC configured (p=none)
DNSSEC enabled
Sitemap.xml 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

atlastheorie.nl Technology Stack & Detected Technologies

🤖 AI Summary
Our automated technology detection scan was unable to identify specific technologies on atlastheorie.nl. This could indicate that the site uses server-side rendering without client-side technology fingerprints, employs aggressive code obfuscation, or uses custom-built solutions that don't match known technology signatures.

atlastheorie.nl Performance, Speed & Core Web Vitals

🤖 AI Summary
atlastheorie.nl delivers its homepage in 23274ms (server response time), which is considered slow by industry standards. The total page weight is 2 KB, and we detected 3 resource requests loading assets from 0 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 1 JavaScript files are minified. Minifying the remaining 2 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 atlastheorie.nl 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 2 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for atlastheorie.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 view0.0g
RatingA
Page Weight & Optimization
HTML Size2 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Total Requests3
3rd Party Domains0
CSS Minified0/1
JS Minified0/1

atlastheorie.nl DNS Records, Email Authentication & Domain Registration

🤖 AI Summary
atlastheorie.nl resolves to the IPv4 address 216.198.79.1, 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: ns0.transip.net, ns1.transip.nl, and ns2.transip.eu. 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 atlastheorie.nl 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 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 enabled for atlastheorie.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 3 active subdomains for atlastheorie.nl: ftp.atlastheorie.nl, mail.atlastheorie.nl, and www.atlastheorie.nl. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
A
216.198.79.1
NS
ns0.transip.net
ns1.transip.nl
ns2.transip.eu
MX
aspmx.l.google.com
alt1.aspmx.l.google.com
alt2.aspmx.l.google.com
alt3.aspmx.l.google.com
alt4.aspmx.l.google.com
Email & Authentication
SPF
DMARC p=none
DKIM
DNSSEC
MX ProviderGoogle Workspace
Registrar
Organisation
Country
Contact
Registered
Expires
Domain Age
IPv6 SupportNo
Subdomains (3 found)
ftp.atlastheorie.nl mail.atlastheorie.nl www.atlastheorie.nl

atlastheorie.nl Page Content, Images & Accessibility

🤖 AI Summary
The homepage of atlastheorie.nl contains 10 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 0 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 0 external links pointing to third-party websites. There are 1 external JavaScript files, 1 CSS stylesheets, and 0 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages). Notable missing features: robots.txt and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility.
10
Words
0
Images
100%
Alt Text Score
2
Page Size (KB)
Content Structure
H1
H2 Tags0
H3 Tags0
H4 Tags0
H5 Tags0
H6 Tags0
Internal Links0
External Links0
Assets & Features
JavaScript Files1
JS Minified0/1
CSS Files1
CSS Minified0/1
Iframes0
Images0
Missing Alt0
SitemapYes ✓
Robots.txtNo
PWANo
AMPNo
RSS FeedNo

atlastheorie.nl SEO Analysis, Meta Tags & Open Graph

🤖 AI Summary
The title tag for atlastheorie.nl is too long at 75 characters: "AtlasTheorie | Sneller Slagen. Slimmer Rijden. Beter Leren. Sneller Succes.". At 75 characters, the title will likely be truncated in Google search results (recommended: 50-60 characters). Consider shortening it while keeping the most important keywords at the beginning. The meta description is 206 characters (slightly long): "Theoriecursus Amsterdam. Theorie oefenen online. Theorie examen voorbereiden. Theorie oefenen amsterdam. Theorie oefenen...". 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 nl and a favicon is configured. Open Graph meta tags are configured with 3/4 recommended fields: OG title ("AtlasTheorie | Sneller Slagen. Slimmer Rijden. Beter Leren. ..."), OG description, 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 meta keywords tag contains 8 terms including theoriecursus, theorie oefenen, theorie examen, theorie oefenen online, and theorie oefenen amsterdam. 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
AtlasTheorie | Sneller Slagen. Slimmer Rijden. Beter Leren. Sneller Succes.
https://atlastheorie.nl
Theoriecursus Amsterdam. Theorie oefenen online. Theorie examen voorbereiden. Theorie oefenen amsterdam. Theorie oefenen online amsterdam. Theorie oefenen online amsterdam. Theorie oefenen online amsterdam.
Meta Tags
TitleAtlasTheorie | Sneller Slagen. Slimmer Rijden. Beter Leren. ...
Title Length75 chars
Meta Desc Length206 chars
H1
Languagenl
Canonical
Meta Robotsnot set
Meta Keywordstheoriecursus, theorie oefenen, theorie examen, theorie oefe...
Schema.org & Social
Schema Types
OG Typewebsite
OG ImageNot set
Twitter Cardsummary_large_image
FaviconSet ✓