What technology does re3data.org use?

re3data.org is built with Apache.

Is re3data.org secure (HTTPS)?

Yes. re3data.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 26, 2026.

Who hosts re3data.org?

re3data.org is hosted on KIT - Karlsruhe Institute of Technology, DE.

What is re3data.org's SEO score?

re3data.org scored 60/100 for SEO in the latest analysis (fair).

What is re3data.org's overall website score?

re3data.org has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.

re3data.org

Home | re3data.org

Last scanned Jul 26, 2026, 4:17 PM · 4 views

Overall score

Fair

Summary

This website uses Apache hosted on KIT - Karlsruhe Institute of Technology, DE. SEO is fair (60/100) and accessibility is good (75/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

Germany

Hosted on KIT - Karlsruhe Institute of Technology, DE

Top issues to fix

11 issues found · 5 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing viewport meta tag
Accessibility
Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

+5 more issues — details in the sections below.

SEO

5 issue(s) found

100

Performance

285 ms

Security

HTTPS & header checks

Accessibility

3 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

X (Twitter)

Contact

Email, phone, and address published on this site's own pages.

Email: info@re3data.org

Source: https://www.re3data.org/contact

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: KIT - Karlsruhe Institute of Technology, DE
CDN provider: —
IP address: 129.13.130.200
ASN: AS34878 (KIT - Karlsruhe Institute of Technology, DE)

DNS records

Type	Value
A	129.13.130.200
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: www.re3data.org
Valid from: Jul 28, 2026
Valid to: Oct 26, 2026
Days until expiry: 89
SAN domains: www.re3data.org

Security headers

Strict-Transport-SecurityMissing
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 1 · H3 5

Links

27 internal · 9 external · 0 broken

Images

6 total · 1 missing alt

Scripts / Styles

7 scripts · 3 stylesheets

JS / CSS size

566 KB · 195 KB

Page size

19.8 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 1
sitemap.xml: Found
URLs in sitemap: 3516

SEO issues

Missing meta description
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags

Scan details

Requested URL: https://re3data.org
Final URL: https://www.re3data.org/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 285 ms
HTML size: 19.8 KB
Redirect chain: https://re3data.org → https://www.re3data.org/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does re3data.org use?: re3data.org is built with Apache.
Is re3data.org secure (HTTPS)?: Yes. re3data.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 26, 2026.
Who hosts re3data.org?: re3data.org is hosted on KIT - Karlsruhe Institute of Technology, DE.
What is re3data.org's SEO score?: re3data.org scored 60/100 for SEO in the latest analysis (fair).
What is re3data.org's overall website score?: re3data.org has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.