What powers 
poutnik-jan.cz?
Last seen Aug 2026 · 2 technologies across 2 categories
Programming languages
PHP
since Sep 2021
Web servers
Apache HTTP Server
since Jan 2019
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 71% phone
- 29% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.48 / 10 · ranked #912,297 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 0.1 MB · 24 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on SATT-AS (31.31.227.66, IPv6)
- DNS: websupport.cz
- Email: no MX record returned
- Email security: DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 101,859, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted