What powers resacs.cz?
Last seen Sep 2026 · 40 technologies across 21 categories
Advertising
Analytics
Authentication
CDN
CMS
Databases
Ecommerce
Font scripts
Hosting panels
JavaScript libraries
Miscellaneous
Page builders
Performance
Programming languages
Security
Tag managers
UI frameworks
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
- Sep 2026 Content Signals changed
AI Crawlers
No AI crawlers blocked
Standards: Content Signals
Audience
- 84% phone
- 13% desktop
- 3% tablet
Czechia
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.07 / 10 · ranked #3,411,085 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 375 ms |
| CLS | 0 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech (Czechia)
- Weight: 10.3 MB · 68 requests
- WordPress theme: generatepress · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Resacs | Český výrobce bateriových uložišť na míru
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Websupport (37.9.175.211)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: no SPF record, DMARC quarantine, DNSSEC signed
- SSL: ZeroSSL, ECDSA P384, expires Nov 2026
- Common Crawl link graph: rank 18,285,967, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| resacs.cz | 31 |
| www.resacs.cz | 29 |
| eshop.resacs.cz | 20 |
Full technology history →
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Recent changes
- detected OpenResty Apr 2026
- detected Microsoft Advertising Mar 2026
- detected Microsoft Clarity Mar 2026
- dropped reCAPTCHA Feb 2026
- detected WPML Jan 2026
- dropped WPML Dec 2025