What powers visk.cz?
Last seen Oct 2026 · 25 technologies across 12 categories
Analytics
Google Analytics
since Jan 2019
Font scripts
JavaScript frameworks
JavaScript libraries
Lightbox
since Apr 2025
OWL Carousel
since Sep 2019
Swiper
since Apr 2025
Twitter typeahead.js
since Feb 2024
Maps
Google Maps
since Sep 2019
Miscellaneous
Programming languages
Security
HSTS
since Sep 2022
UI frameworks
Bootstrap
since Sep 2019
Web frameworks
Web servers
Apache HTTP Server
since Sep 2019
Webmail
Apple iCloud Mail
since Jan 2023
Microsoft 365
since Aug 2022
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 61% phone
- 39% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.38 / 10 · ranked #1,033,406 of all domains
36 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Czech
- Weight: 17.9 MB · 93 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on WEDOS (89.221.215.6)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 7,216,184, 3 hosts
- Verified with: Apple Business, Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| visk.cz | 19 |
| www.visk.cz | 10 |
| edu.visk.cz | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- detected HTTP/3 Feb 2026