What powers 
retia.cz?
Last seen Oct 2026 · 32 technologies across 16 categories
Analytics
CMS
Cookie compliance
Databases
Font scripts
JavaScript libraries
Miscellaneous
Page builders
Performance
Programming languages
Tag managers
Video players
Web servers
Webmail
WordPress plugins
WordPress themes
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 53% phone
- 47% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.65 / 10 · ranked #789,485 of all domains
43 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 2.7 MB · 49 requests
- WordPress theme: rife-free · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- RETIA, a.s. (RETIA on Wikidata)
- Founded: 1993
- Sector: defence industry
- Country: Czech Republic
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Websupport (37.9.175.212, IPv6)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 3,434,365, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| retia.cz | 27 |
| www.retia.cz | 20 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Autoptimize Jun 2026
- dropped Twitter Emoji (Twemoji) Jun 2026
- detected Apple iCloud Mail May 2026
- detected HTTP/3 Jan 2026
- detected OpenResty Jan 2026
- detected Twitter Emoji (Twemoji) Dec 2025