What powers 
singingrock.cz?
Last seen Aug 2026 · 16 technologies across 9 categories
Font scripts
Google Font API
since Jan 2023
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PWA
since Aug 2022
Operating systems
Windows Server
since Jan 2019
Programming languages
PHP
since Aug 2022
Security
Web frameworks
CakePHP
since Aug 2022
Web servers
Webmail
Microsoft 365
since May 2023
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
Audience
- 57% phone
- 43% desktop
Czechia
Slovakia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #352,085 of all domains
79 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 0.7 MB · 26 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ZONER-AS (217.198.119.208)
- DNS: websupport.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 3072, expires Nov 2026
- Common Crawl link graph: rank 3,431,925, 3 hosts
- Verified with: Atlassian, Microsoft 365, OpenAI
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| polygon.singingrock.cz | 11 |
| www.singingrock.cz | 10 |
| b2b.singingrock.cz | 7 |