What powers 
pslib.cz?
Last seen Oct 2026 · 30 technologies across 17 categories
Analytics
CDN
jsDelivr
since Feb 2025
Development
Turbopack
since Oct 2026
Font scripts
Bootstrap Icons
since Feb 2025
JavaScript frameworks
JavaScript libraries
Load balancers
Miscellaneous
Operating systems
AlmaLinux
since Jun 2026
Windows Server
since May 2021
Performance
Priority Hints
since Mar 2025
Programming languages
Security
HSTS
since Sep 2022
UI frameworks
Bootstrap
since Dec 2021
Web frameworks
Microsoft ASP.NET
since May 2021
Web server extensions
Web servers
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 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
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #350,453 of all domains
64 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Czech
- Weight: 2.6 MB · 96 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Jul 2001 (25 years) via Webglobe, s.r.o., renews Jul 2027
- Hosted on CESNET2 CESNET z.s.p.o. (195.113.159.98, IPv6)
- DNS: ignum.com
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 3072, expires Dec 2026
- Common Crawl link graph: rank 213,800, 20 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| prace.pslib.cz | 17 |
| praxe.pslib.cz | 11 |
| sobota.pslib.cz | 10 |
| web.pslib.cz | 10 |
| pslib.cz | 9 |
| www.pslib.cz | 9 |
| dod.pslib.cz | 7 |
| oauth.pslib.cz | 7 |
| bakalar.pslib.cz | 6 |
| jobs.pslib.cz | 6 |
Full technology history →
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Recent changes
- detected AlmaLinux Jun 2026