What powers 
zamekdecin.cz?
Last seen Sep 2026 · 9 technologies across 8 categories
Authentication
JavaScript libraries
Miscellaneous
Operating systems
Programming languages
Rich text editors
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 88% phone
- 12% desktop
Czechia
Germany
Poland
Indonesia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #362,453 of all domains
85 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 5.5 MB · 57 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Chateau of Děčín
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on JAW-AS (77.95.46.10)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 1,224,096, 2 hosts
- Verified with: Meta Business, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Open Graph Sep 2026
- detected Debian Aug 2026