What powers observatory.cz?
Last seen Feb 2026 · 19 technologies across 12 categories
Analytics
Google Analytics
since May 2021
CDN
Cloudflare
since Nov 2021
Google Hosted Libraries
since Feb 2022
CMS
WordPress
since Jun 2019
Databases
MySQL
since Jun 2019
Font scripts
Google Font API
since Jun 2019
JavaScript libraries
Operating systems
Debian
since Jan 2026
Programming languages
PHP
since Jun 2019
Security
Cloudflare Bot Management
since Nov 2021
Web frameworks
Nette Framework
since Jun 2019
Web servers
WordPress plugins
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
4.02 / 10 · ranked #555,901 of all domains
69 referring domains · OpenPageRank
Infrastructure
- Hosted on WEB4U (81.91.93.60)
- DNS: web4u.cz
- Email: no MX record returned
- Email security: DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 748,396, 5 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| observatory.cz | 17 |
| www.observatory.cz | 17 |
| rocenka.observatory.cz | 3 |