What powers 
sigma-zentrifugen.de?
Last seen Sep 2026 · 12 technologies across 9 categories
CDN
CMS
JavaScript libraries
Miscellaneous
Programming languages
Security
UI frameworks
Web servers
Webmail
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 79% desktop
- 21% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.57 / 10 · ranked #830,697 of all domains
47 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.3 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 2900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 1.1 MB · 33 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on BKVG-AS (130.255.79.198)
- DNS: netcup.net
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record
- SSL: Sectigo, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 9,300,529, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
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Recent changes
- dropped GoDaddy Jan 2026