What powers corestone.cz?
Last seen Sep 2026 · 30 technologies across 18 categories
Analytics
CDN
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Page builders
Performance
Programming languages
Security
Tag managers
Web servers
Webmail
Widgets
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.23 / 10 · ranked #9,521,725 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 100 ms |
| CLS | 0.1 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- CDN: Cloudflare
- Weight: 4.3 MB · 46 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (185.158.133.1)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Google Trust Services, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 64,896,642, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
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Recent changes
- detected Cloudflare Sep 2026
- detected Cloudflare Bot Management Sep 2026
- detected HSTS Sep 2026
- detected Open Graph Sep 2026
- detected TanStack Start Sep 2026
- detected Tinybird Sep 2026
- dropped GSAP Aug 2026
- dropped GTranslate Aug 2026
- dropped jQuery UI Aug 2026
- detected reCAPTCHA Jun 2026
- detected GTranslate Mar 2026
- detected HTTP/3 Nov 2025
- detected OpenResty Nov 2025