What powers ra15.cz?
Last seen Oct 2026 · 33 technologies across 15 categories
Analytics
Cloudflare Browser Insights
since Jul 2026
Google Analytics
since Mar 2025
Caching
Redis Object Cache
since Jul 2026
CDN
Cloudflare
since Jul 2026
CMS
Databases
Font scripts
Hosting
Elementor Cloud
since Jul 2026
JavaScript libraries
Miscellaneous
Performance
Priority Hints
since Mar 2025
Programming languages
PHP
since Oct 2022
Security
Cloudflare Bot Management
since Jul 2026
HSTS
since Jul 2026
Webmail
Microsoft 365
since May 2025
WordPress plugins
RankMath SEO
since Mar 2025
WordPress themes
AI Crawlers
robots.txt could not be read at the last check (Oct 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
2.88 / 10 · ranked #1,820,427 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech (Czechia)
- CDN: Cloudflare
- Weight: 7.1 MB · 112 requests
- WordPress theme: hello-elementor · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (162.159.137.9)
- DNS: forpsi.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- Common Crawl link graph: rank 14,877,411, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| ra15.cz | 32 |
| www.ra15.cz | 24 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Site Kit Sep 2026
- dropped LottieFiles Apr 2026
- detected LottieFiles Dec 2025
- detected Twitter Emoji (Twemoji) Dec 2025