What powers vdc.cz?
Last seen Sep 2026 · 29 technologies across 18 categories
Advertising
CDN
CMS
Cookie compliance
Databases
Ecommerce
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Performance
Programming languages
Security
UI frameworks
Web servers
Webmail
WordPress plugins
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Bytespider Blocked
The other 32 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
1 of 33 AI crawlers blocked
Audience
- 58% phone
- 42% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.75 / 10 · ranked #17,892,807 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 2000 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 8.3 MB · 247 requests
- WordPress theme: woodmart (child: woodmart-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- VDC
- Profiles: LinkedIn
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on MASTER-AS Czech Republic www.master.cz (37.205.12.46)
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 49,725,574, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Super Page Cache Aug 2026
- dropped WP-Optimize Jul 2026
- detected Super Page Cache Jun 2026
- detected WP-Optimize Dec 2025
- dropped Leaflet Nov 2025
- dropped Livefyre Nov 2025
- dropped Underscore.js Nov 2025