Domain report
bdu.de
bdu.de ranks in the top 0.42% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 9 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.42%
- Hosts observed
- 9
From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means
HTTPS reachability
https://bdu.de/ answered with HTTP 200.
Certificate until 2026-12-14C=US, O=Let's Encrypt, CN=YR1
DNS records
- A
- 45.144.187.42
- AAAA
- No records found.
- MX
- 5 bdu-de.mail.protection.outlook.com.
- NS
- dns11.netcologne.de.
- dns13.netcologne.de.
- dns14.netcologne.de.
- dns12.netcologne.de.
- AS
- Server in network Mittwald CM Service GmbH und Co. KG, AS15817 · Germany45.144.187.0/24, which holds 45.144.187.42
Live preview
This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.
Since bdu.de 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)
No RDAP (WHOIS) data is available for bdu.de.
SSL certificate
- Common name
- bdu.de
- Issuer
- C=US, O=Let's Encrypt, CN=YR1
- Valid from
- 2026-09-15
- Valid until
- 2026-12-14
Matches bdu.de exactly. Source: Certificate Transparency logs (crt.sh).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html; charset=utf-8
- Cache-Control
- max-age=83438
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- Not sent
- Strict-Transport-Security
- max-age=31536000; includeSubDomains
- X-Frame-Options
- SAMEORIGIN
- X-Content-Type-Options
- nosniff, nosniff
- Referrer-Policy
- Not sent
- Permissions-Policy
- Not sent
Redirect chain
- 1.
http://bdu.de/HTTP 308→ https://bdu.de/
- 2.
https://bdu.de/HTTP 301→ https://www.bdu.de/
- 3.
https://www.bdu.de/HTTP 200
Meta tags
- Title
- Bundesverband Deutscher Unternehmensberatungen
- Description
- Not set
- Canonical
- https://www.bdu.de/
- Robots
- INDEX,FOLLOW
- Generator
- TYPO3 CMS
- Open Graph title
- Not set
- Open Graph description
- Not set
- Open Graph image
- Not set
- Open Graph type
- Not set
- Twitter card
- summary
- Twitter title
- Not set
- Twitter image
- Not set
robots.txt
- Disallow rules (User-agent: *)
- 6
- Disallow rules (other agents)
- 0
Sitemap declared:
https://bdu.lights-on.tech/sitemap.xml
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.