What powers tisa.cz?
Last seen Aug 2026 · 6 technologies across 6 categories
Font scripts
Google Font API
since Feb 2019
Miscellaneous
RSS
since Dec 2022
Operating systems
Windows Server
since Feb 2019
Security
reCAPTCHA
since Feb 2019
Web servers
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
All crawlers blocked
Audience
- 84% phone
- 16% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.93 / 10 · ranked #628,356 of all domains
55 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 1.3 MB · 83 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Tisá
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on OPTONET-AS (78.156.158.199, IPv6)
- DNS: webhouse.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 3,138,391, 3 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| tisa.cz | 6 |
| www.tisa.cz | 6 |