What powers 
pestra.cz?
Last seen Sep 2026 · 15 technologies across 10 categories
Analytics
Google Analytics
since Jan 2019
Authentication
Facebook Login
since Sep 2021
CDN
Amazon S3
since May 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since May 2022
Programming languages
Tag managers
Google Tag Manager
since Jan 2019
Web servers
Webmail
Microsoft 365
since Aug 2022
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
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.73 / 10 · ranked #749,717 of all domains
42 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 275 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech (Czechia)
- Weight: 2.1 MB · 57 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on BLINDSPOT (91.239.200.60, IPv6)
- DNS: thinline.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 9,114,508, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted