What powers knihazknihovny.cz?
Last seen Sep 2025 · 19 technologies across 11 categories
CDN
cdnjs
since Nov 2021
Cloudflare
since Jun 2022
jQuery CDN
since Feb 2022
jsDelivr
since Nov 2024
Unpkg
since Feb 2025
Comment systems
Ecommerce
Cart Functionality
since Sep 2021
JavaScript libraries
Maps
Miscellaneous
Programming languages
PHP
since May 2021
Security
reCAPTCHA
since May 2021
UI frameworks
Web frameworks
Web servers
Nginx
since May 2021
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.08 / 10 · ranked #1,456,985 of all domains
20 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on SERVERZONE (185.216.220.37, IPv6)
- DNS: forpsi.cz
- Email: mail25.cz
- Email security: SPF (soft fail), no DMARC record, DNSSEC signed
- Common Crawl link graph: rank 18,411,978, 2 hosts
DNS records as swept Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| knihazknihovny.cz | 19 |
| www.knihazknihovny.cz | 19 |