What powers lezecka-arena.cz?
Last seen Aug 2026 · 11 technologies across 6 categories
Analytics
CDN
JavaScript frameworks
Miscellaneous
Performance
UI frameworks
AI Crawlers
Blocks 8 of 33 AI crawlers we track by name in its robots.txt. Checked Aug 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
The other 25 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
Content Signals:
search=yes ai-train=no declared in robots.txt
AI Crawlers
8 of 33 AI crawlers blocked
Standards: Content Signals
Audience
- 100% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.40 / 10 · ranked #7,523,312 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| INP | 275 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- CDN: Cloudflare
- Weight: 2.0 MB · 65 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Industry: Sports and fitness (declares
SportsActivityLocation)
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Cloudflare (104.21.65.85, IPv6)
- DNS: Cloudflare DNS
- Email: wedos.net
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 39,383,037, 2 hosts
- Verified with: Google
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 Apache HTTP Server Aug 2026
- dropped Google Font API Aug 2026
- dropped jQuery Aug 2026
- dropped jQuery Migrate Aug 2026
- dropped jQuery UI Aug 2026
- dropped MySQL Aug 2026
- dropped PHP Aug 2026
- dropped Polylang Aug 2026
- dropped RSS Aug 2026
- detected TanStack Start Aug 2026
- dropped Twenty Eleven Aug 2026
- dropped WordPress Aug 2026
- dropped WordPress Super Cache Aug 2026
- detected Base UI Jul 2026
- detected Cloudflare Jul 2026
- detected Cloudflare Browser Insights Jul 2026
- detected HTTP/3 Jul 2026
- detected Open Graph Jul 2026
- detected Priority Hints Jul 2026
- detected PWA Jul 2026
- detected Radix UI Jul 2026
- detected React Jul 2026
- detected Tailwind CSS Jul 2026