What powers htpcr.cz?
Last seen Sep 2026 · 19 technologies across 12 categories
Analytics
CDN
Font scripts
JavaScript libraries
Miscellaneous
Programming languages
Security
Tag managers
UI frameworks
Video players
Web servers
Webmail
AI Crawlers
Restricts 16 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Applebot-Extended Restricted
- Bytespider Restricted
- CCBot Restricted
- ClaudeBot Restricted
- Google-Extended Restricted
- GPTBot Restricted
- meta-externalagent Restricted
Search and AI assistants
- Amazonbot Restricted
- Claude-SearchBot Restricted
- DuckAssistBot Restricted
- OAI-SearchBot Restricted
- PerplexityBot Restricted
User-request fetchers
- ChatGPT-User Restricted
- Claude-User Restricted
- MistralAI-User Restricted
- Perplexity-User Restricted
The other 17 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- llms-full.txt found
- ai.txt not checked
Content Signals:
search=yes ai-train=yes ai-input=yes declared in robots.txt
- Oct 2026 mistralai-user added to robots.txt
- Oct 2026 chatgpt-user added to robots.txt
- Oct 2026 claude-searchbot added to robots.txt
- Oct 2026 claude-user added to robots.txt
- Oct 2026 ccbot added to robots.txt
- Oct 2026 Content Signals changed
AI Crawlers
16 of 33 AI crawlers restricted
Standards: llms.txt, llms-full.txt, Content Signals
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.21 / 10 · ranked #3,079,393 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 12.7 MB · 191 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on MASTER-AS Czech Republic www.master.cz (176.227.168.172)
- DNS: elsynet.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 17,143,729, 2 hosts
- Verified with: Microsoft 365
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
- dropped Cloudflare Bot Management Apr 2026
- dropped Debian Apr 2026
- dropped Google Font API Apr 2026
- dropped Google Maps Apr 2026
- dropped lit-element Apr 2026
- dropped lit-html Apr 2026
- dropped Matomo Analytics Apr 2026
- detected Bootstrap Mar 2026
- detected cdnjs Mar 2026
- detected Google Tag Manager Mar 2026
- detected HSTS Mar 2026
- detected jsDelivr Mar 2026
- detected Lenis Mar 2026
- detected Lightbox Mar 2026
- detected Open Graph Mar 2026
- detected Popper Mar 2026
- detected Tiny Slider Mar 2026
- detected Typekit Mar 2026
- detected Vimeo Mar 2026