What powers 
zdh-zert.de?
Last seen Aug 2026 · 14 technologies across 9 categories
Analytics
Google Analytics
since Aug 2022
CDN
CMS
DNN
since Aug 2022
Ecommerce
Cart Functionality
since Aug 2022
JavaScript libraries
Isotope
since Aug 2022
Security
HSTS
since Sep 2022
UI frameworks
Web frameworks
Microsoft ASP.NET
since Aug 2022
Webmail
Microsoft 365
since Aug 2022
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 60% phone
- 40% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.50 / 10 · ranked #401,577 of all domains
67 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| CLS | 0.05 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- Weight: 0.7 MB · 35 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on NETCOLOGNE (78.35.1.162)
- DNS: inch-media.de
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Sectigo, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 12,622,755, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted