What powers 
provazek.cz?
Last seen Sep 2026 · 11 technologies across 8 categories
CMS
Sanity
since Apr 2024
Issue trackers
Sentry
since Apr 2024
JavaScript frameworks
Miscellaneous
Open Graph
since Sep 2022
Webpack
since Apr 2024
PaaS
Vercel
since Apr 2024
Performance
Priority Hints
since Apr 2024
Programming languages
Node.js
since Apr 2024
Security
HSTS
since Apr 2024
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 77% phone
- 23% desktop
Czechia
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.50 / 10 · ranked #402,495 of all domains
98 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 75 ms |
| CLS | 0.1 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- CDN: Vercel
- Weight: 0.9 MB · 46 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (76.76.21.21)
- DNS: faster.cz
- Email: faster.cz
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 759,932, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted