What powers sumava.cz?
Last seen Aug 2026 · 14 technologies across 11 categories
Advertising
Google AdSense
since Nov 2022
Analytics
Google Analytics
since Jan 2019
Cookie compliance
Funding Choices
since Mar 2023
Font scripts
Google Font API
since Jun 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PWA
since Aug 2022
Programming languages
Security
reCAPTCHA
since Nov 2022
Tag managers
Google Tag Manager
since Jul 2023
UI frameworks
Bootstrap
since Jun 2022
Web servers
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
- 87% phone
- 13% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.30 / 10 · ranked #1,131,860 of all domains
32 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.1 s |
| INP | 175 ms |
| CLS | 0.15 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 1.4 MB · 221 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on GRANSY Gransy s.r.o. gransy.com (185.28.193.35)
- DNS: gransy.com
- Email: internetserver.cz
- Email security: SPF, no DMARC record
- Common Crawl link graph: rank 1,243,154, 9 hosts
DNS records as swept Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sumava.cz | 14 |
| www.www.sumava.cz | 14 |
| www.sumava.cz | 13 |
| webmuzeum.sumava.cz | 2 |
Full technology history →
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Recent changes
- dropped Cloudflare Aug 2026
- dropped Cloudflare Bot Management Aug 2026
- detected Cloudflare Jun 2026
- detected Cloudflare Bot Management Jun 2026
- dropped Snowplow Analytics Oct 2025