What powers 
christianlehmann.eu?
Last seen Sep 2026 · 5 technologies across 5 categories
CDN
Cloudflare
since Nov 2023
Hosting
Strato
since Aug 2022
Operating systems
UNIX
since Dec 2016
Security
Cloudflare Bot Management
since Nov 2023
Web servers
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
- 69% desktop
- 31% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.64 / 10 · ranked #795,596 of all domains
68 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German
- Weight: 0.2 MB · 10 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on STRATO (81.169.145.156, IPv6)
- DNS: STRATO
- Email: STRATO
- Email security: no SPF record, DMARC reject
- SSL: Sectigo, RSA 2048, wildcard, expires Mar 2027
- Common Crawl link graph: rank 616,148, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| christianlehmann.eu | 5 |
| www.christianlehmann.eu | 5 |