What powers frej.cz?
Last seen Sep 2026 · 21 technologies across 12 categories
Analytics
CDN
CMS
Databases
JavaScript libraries
Miscellaneous
PaaS
Page builders
Performance
Programming languages
WordPress plugins
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 meta-externalagent removed from robots.txt
- Sep 2026 ccbot removed from robots.txt
- Sep 2026 claudebot removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 75% phone
- 25% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.71 / 10 · ranked #756,926 of all domains
21 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.6 s |
| CLS | 0.6 |
| TTFB | 2900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- CDN: Cloudflare
- Weight: 2.6 MB · 98 requests
- WordPress theme: divi (child: drfrej) · all themes
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.36.28, IPv6)
- DNS: Cloudflare DNS
- Email: Active 24
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 264,717, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Fluent Forms Jul 2026
- detected Select2 Jul 2026
- detected Selectize Jul 2026
- dropped Nginx Apr 2026
- detected Cloudflare Mar 2026
- detected Cloudflare Browser Insights Mar 2026
- detected HTTP/3 Mar 2026
- dropped Burst Feb 2026
- dropped Swiper Jan 2026