Domain report
cessda.org
cessda.org ranks in the top 0.58% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.58%
- Hosts observed
- 2
From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means
HTTPS reachability
https://cessda.org/ answered with HTTP 200.
DNS records
- A
- 194.63.248.52
- AAAA
- 2a01:5b40:0:248::52
- MX
- 10 mail01.gesis.org.
- 20 mail02.gesis.org.
- NS
- ns1.hyp.net.
- ns2.hyp.net.
- ns3.hyp.net.
Live preview
This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.
Since cessda.org can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.
Domain registration (WHOIS / RDAP)
RDAP lookup failed (HTTP 429).
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html; charset=UTF-8
- Cache-Control
- no-cache, private
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- frame-ancestors 'self'
- Strict-Transport-Security
- Not sent
- X-Frame-Options
- SAMEORIGIN
- X-Content-Type-Options
- Not sent
- Referrer-Policy
- Not sent
- Permissions-Policy
- Not sent
Redirect chain
- 1.
http://cessda.org/HTTP 301→ http://cessda.eu/
- 2.
http://cessda.eu/HTTP 301→ https://www.cessda.eu/
- 3.
https://www.cessda.eu/HTTP 200
Meta tags
- Title
- CESSDA - Consortium of European Social Science Data Archives
- Description
- CESSDA consolidates and strengthens European social science research by providing digital research tools, building trust and standards and developing and widening the European research infrastructure landscape.
- Canonical
- Not set
- Robots
- Not set
- Generator
- Not set
- Open Graph title
- Not set
- Open Graph description
- Not set
- Open Graph image
- Not set
- Open Graph type
- Not set
- Twitter card
- Not set
- Twitter title
- Not set
- Twitter image
- Not set
robots.txt
- Disallow rules (User-agent: *)
- 0
- Disallow rules (other agents)
- 0
No Sitemap declared in robots.txt.
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.