What powers 
peter-greven.de?
Last seen Sep 2026 · 14 technologies across 10 categories
Analytics
CMS
JavaScript libraries
Miscellaneous
Photo galleries
Programming languages
Tag managers
UI frameworks
Video players
Web servers
AI Crawlers
Restricts 4 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- ClaudeBot Restricted
- Google-Extended Restricted
- GPTBot Restricted
Search and AI assistants
- PerplexityBot Restricted
The other 29 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 claudebot added to robots.txt
- Sep 2026 google-extended added to robots.txt
- Sep 2026 gptbot added to robots.txt
- Sep 2026 perplexitybot added to robots.txt
AI Crawlers
4 of 33 AI crawlers restricted
Audience
- 50% phone
- 50% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.51 / 10 · ranked #882,579 of all domains
41 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 3.7 MB · 163 requests
- Structured data: Microdata, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on MITTWALD-AS Mittwald CM Service GmbH und Co. KG (193.53.247.109)
- DNS: udag.de
- Email: peter-greven.de
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 11,576,752, 3 hosts
- Verified with: Atlassian, Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| karriere.peter-greven.de | 13 |
| www.peter-greven.de | 13 |