heizoel24.de Website Overview & Technology Report
🤖 AI Summary
We performed a comprehensive analysis of heizoel24.de on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 28336ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 587 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 70/100 (good). The following security headers are properly configured: Content-Security-Policy, Strict-Transport-Security (HSTS), X-Frame-Options, and X-Content-Type-Options. However, the site is missing 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 1 technologies across 1 categories powering heizoel24.de. The detected stack includes Nuxt.js. The site uses Nuxt.js as its primary framework.
Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, heizoel24.de receives an overall trust score of 75/100, classified as "Likely Safe".
HTTP Response
Status200 OK
Response Time28336ms
ProtocolHTTP/2
Page Size587 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Server—
Total Requests263
3rd Party Domains11
Redirect1 hop(s)
Detected Technologies (1)
🔧 Nuxt.js
Security Headers
✓
Content-Security-Policy
Set ✓
✓
Strict-Transport-Security (HSTS)
Set ✓
✓
X-Content-Type-Options
Set ✓
✗
Referrer-Policy
Not set
✗
Permissions-Policy
Not set
SSL Certificate
IssuerDigiCert Inc
Issuer FullcountryName=US, organizationName=DigiCert Inc, organizationalUnitName=www.digicert.com, commonName=Thawte TLS RSA CA G1
SubjectcommonName=heizoel24.de
Type—
TLS VersionTLS 1.2
Cipher SuiteECDHE-RSA-AES256-GCM-SHA384
Algorithm—
Issued—
Expires— (? days)
SANs—
heizoel24.de Trust Score & Safety Analysis
🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, heizoel24.de receives a trust score of 75/100, 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 DKIM (DomainKeys Identified Mail) providing cryptographic email verification.
Areas of concern include: 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 heizoel24.de 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
✅ HSTS enabled
✅ SPF configured
✅ DMARC configured (p=none)
✅ DKIM configured
⚠️ DNSSEC not enabled
✅ Sitemap.xml found
✅ Robots.txt found
⚠️ 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
heizoel24.de Technology Stack & Detected Technologies
🤖 AI Summary
Our technology detection engine scanned heizoel24.de and identified 1 distinct technologies across 1 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records.
Framework: Nuxt.js — provides the application framework and routing for heizoel24.de.
Framework
heizoel24.de Performance, Speed & Core Web Vitals
🤖 AI Summary
heizoel24.de delivers its homepage in 28336ms (server response time), which is considered slow by industry standards. The total page weight is 587 KB, and we detected 263 resource requests loading assets from 11 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 0 CSS files and 0 out of 29 JavaScript files are minified. Minifying the remaining 29 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 heizoel24.de produces approximately 0.29g of CO₂, earning a carbon rating of C. This is an average carbon footprint. Optimizing images and reducing unnecessary scripts could further improve this score. For reference, the average web page produces about 0.5g of CO₂ per page view. The page weight of 587 KB is the primary factor in this calculation.
Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for heizoel24.de. 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 view0.29g
RatingC
Page Weight & Optimization
HTML Size587 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Total Requests263
3rd Party Domains11
CSS Minified0/0
JS Minified0/29
heizoel24.de DNS Records, Email Authentication & Domain Registration
🤖 AI Summary
heizoel24.de resolves to the IPv4 address 185.105.115.66, 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.rrpproxy.net, ns2.rrpproxy.net, and ns3.rrpproxy.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 heizoel24.de is handled by interaid.eu with 1 MX records configured: mail.interaid.eu. 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 (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 heizoel24.de. 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 6 active subdomains for heizoel24.de: api.heizoel24.de, cdn.heizoel24.de, m.heizoel24.de, shop.heizoel24.de, support.heizoel24.de, and www.heizoel24.de. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
NS
ns1.rrpproxy.net
ns2.rrpproxy.net
ns3.rrpproxy.net
Email & Authentication
MX Providerinteraid.eu
Registrar—
Organisation—
Country—
Contact—
Registered—
Expires—
Domain Age—
IPv6 SupportNo
Subdomains (6 found)
api.heizoel24.de cdn.heizoel24.de m.heizoel24.de shop.heizoel24.de support.heizoel24.de www.heizoel24.de
heizoel24.de Page Content, Images & Accessibility
🤖 AI Summary
The homepage of heizoel24.de contains 1,266 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 11 H2 headings, 8 H3 headings, 0 H4 headings, 1 H5, and 0 H6 headings.
The page includes 86 images. 45 images (52%) 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 48% of images have proper alt text — we recommend adding descriptive alt attributes to all images.
The link structure consists of 116 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 29 external JavaScript files, 0 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), robots.txt (controls search engine crawling behavior), Schema.org structured data (AggregateRating, LocalBusiness, and PostalAddress), and Progressive Web App (PWA) manifest (enabling app-like installation).
The website has social media presence across 3 platforms: Facebook (@heizOel24), Twitter (@HeizOel24), and Instagram (@HeizOel24). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.
Content Structure
H1Heizöl Preisvergleich
H2 Tags11
H3 Tags8
H4 Tags0
H5 Tags1
H6 Tags0
Internal Links116
External Links6
Assets & Features
JavaScript Files29
JS Minified0/29
CSS Files0
CSS Minified0/0
Iframes0
Images86
Missing Alt45
SitemapYes ✓
Robots.txtYes ✓
PWAYes ✓
AMPNo
RSS FeedNo
Schema.org Types
AggregateRatingLocalBusinessPostalAddress
Social Media Presence
Facebook: @heizOel24Twitter: @HeizOel24Instagram: @HeizOel24
heizoel24.de SEO Analysis, Meta Tags & Open Graph
🤖 AI Summary
The title tag for heizoel24.de is well-optimized at 51 characters: "Heizöl Preisvergleich beim Testsieger » HeizOel24 ✓". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation.
The meta description is 152 characters (well-optimized): "281.162 Händlerbewertungen mit ∅ 98% ☆ einfach Angebote vergleichen » zuverlässige und günstige Händler finden ✓ preiswe...". 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.heizoel24.de, preventing duplicate content issues, the page language is declared as de, the meta robots directive is set to index,follow, and a favicon is configured.
No Open Graph tags are configured. When someone shares a link to heizoel24.de on social media, the platform will have to guess the title, description, and image — often producing unattractive or inaccurate previews. Adding OG tags is essential for social media marketing.
The site implements Schema.org structured data with the following types: AggregateRating, LocalBusiness, and PostalAddress. 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.
The meta keywords tag contains 6 terms including heizöl, heizöl preisvergleich, heizöl bestellen, heizöl billig, and heizöl günstig. 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
Heizöl Preisvergleich beim Testsieger » HeizOel24 ✓
https://heizoel24.de
281.162 Händlerbewertungen mit ∅ 98% ☆ einfach Angebote vergleichen » zuverlässige und günstige Händler finden ✓ preiswert Heizöl kaufen ✓ Jetzt sparen!
Meta Tags
TitleHeizöl Preisvergleich beim Testsieger » HeizOel24 ✓...
Title Length51 chars
Meta Desc Length152 chars
H1Heizöl Preisvergleich
Languagede
Canonicalhttps://www.heizoel24.de
Meta Robotsindex,follow
Meta Keywordsheizöl, heizöl preisvergleich, heizöl bestellen, heizöl bill...
Schema.org & Social
Schema TypesAggregateRating, LocalBusiness, PostalAddress
OG Type—
OG ImageNot set
Twitter Card—
FaviconSet ✓