What powers planetarium.sk?
Last seen Sep 2026 · 19 technologies across 9 categories
CDN
cdnjs
since Oct 2025
Cloudflare
since Oct 2025
Google Hosted Libraries
since Feb 2022
jQuery CDN
since Dec 2023
jsDelivr
since Oct 2025
Font scripts
JavaScript libraries
Miscellaneous
HTTP/3
since May 2026
Programming languages
PHP
since Sep 2021
Security
HSTS
since Oct 2025
UI frameworks
Bootstrap
since Aug 2022
Video players
YouTube
since Aug 2022
Web servers
Nginx
since Apr 2020
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
Audience
- 53% phone
- 47% desktop
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.35 / 10 · ranked #1,065,400 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| CLS | 0.1 |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Slovak
- Weight: 2.1 MB · 63 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Observatory of Maximilian Hell, Žiar nad Hronom
- Founded: 1973
- Country: Slovakia
From Wikidata (CC0).
Infrastructure
- Hosted on ONE-NETWORK (195.181.251.27)
- DNS: dnsbackup.net
- Email: mx-hub.cz
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 1,165,631, 9 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| vstupenky.planetarium.sk | 10 |
| astrin.planetarium.sk | 8 |
| www.planetarium.sk | 8 |
| rs.planetarium.sk | 2 |
Full technology history →
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Recent changes
- detected HTTP/3 May 2026