dfn.de
Startseite - DFN
Last scanned Jul 21, 2026, 12:33 PM · 2 views
Overall score
Great
Top issues to fix
5 issues found · 3 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Summary
This website uses WordPress hosted on UVENSYS - uvensys GmbH, DE. SEO is good (80/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.
SEO
2 issue(s) found
Performance
518 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Startseite - DFN
- Description
- Canonical
- https://www.dfn.de/
- Language
- de-DE
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- UVENSYS - uvensys GmbH, DE
- CDN provider
- —
- IP address
- 37.208.106.105
- ASN
- AS58010 (UVENSYS - uvensys GmbH, DE)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Hellenic Academic and Research Institutions CA
- Subject
- dfn.de
- Valid from
- Sep 9, 2025
- Valid to
- Sep 9, 2026
- Days until expiry
- 49
- SAN domains
- dfn.de, www.dfn.de
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 8 · H3 3
Links
35 internal · 4 external · 0 broken
Images
12 total · 0 missing alt
Scripts / Styles
12 scripts · 5 stylesheets
JS / CSS size
292 KB · 164 KB
Page size
70.5 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Missing meta description
- No H1 heading found
Accessibility issues
- No H1 heading found
Careers
| Role | Location | Posted |
|---|---|---|
| Datenschutzhinweise für Bewerbende | — | — |
| Mehr Informationen | — | — |
| Mehr Informationen | — | — |
Scan details
- Requested URL
- https://dfn.de
- Final URL
- https://www.dfn.de/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 517 ms
- HTML size
- 70.5 KB
- Redirect chain
- https://dfn.de → https://www.dfn.de/
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Frequently asked questions
- What technology does dfn.de use?
- dfn.de is built with WordPress, Plausible Analytics, Apache.
- Is dfn.de secure (HTTPS)?
- Yes. dfn.de uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Sep 9, 2026.
- Who hosts dfn.de?
- dfn.de is hosted on UVENSYS - uvensys GmbH, DE.
- What is dfn.de's SEO score?
- dfn.de scored 80/100 for SEO in the latest analysis (great).
- What is dfn.de's overall website score?
- dfn.de has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
- Is dfn.de hiring?
- Yes. dfn.de has 3 open roles listed on their careers page.
OpenGraph & Twitter Card
OpenGraph
Twitter Card