What powers optikinstruments.cz?
Last seen Sep 2026 · 12 technologies across 11 categories
Analytics
Google Analytics
since Jul 2022
Microsoft Clarity
since Aug 2024
Font scripts
Typekit
since Jul 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Operating systems
Debian
since Oct 2023
Programming languages
PHP
since Jul 2022
Tag managers
Google Tag Manager
since Jul 2022
Video players
Web frameworks
Nette Framework
since Jul 2022
Web servers
Webmail
Microsoft 365
since Dec 2022
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
2.56 / 10 · ranked #2,394,870 of all domains
15 referring domains · OpenPageRank
Page
- Language: Czech
- Weight: 1.6 MB · 47 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- DNS: web4u.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 11,370,753, 2 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted