What powers chem21.info?
Last seen Jun 2026 · 10 technologies across 7 categories
Advertising
ADFOX
since Feb 2022
Analytics
Cloudflare Browser Insights
since Oct 2025
Liveinternet
since Apr 2018
Yandex.Metrika
since Jun 2018
CDN
Cloudflare
since Apr 2019
Hosting
REG.RU
since Mar 2025
Miscellaneous
HTTP/3
since Sep 2022
Operating systems
Ubuntu
since Apr 2018
Web servers
Audience
- 51% phone
- 48% desktop
- 2% tablet
Russia
Ukraine
Germany
Belarus
Kazakhstan
Uzbekistan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.03 / 10 · ranked #546,954 of all domains
105 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0.2 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 0.6 MB · 33 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| chem21.info | 7 |
| www.chem21.info | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Apache HTTP Server Apr 2026
- detected REG.RU Apr 2026
- detected Ubuntu Apr 2026
- detected ADFOX Nov 2025
- dropped Apache HTTP Server Nov 2025
- dropped Google Tag Manager Nov 2025
- dropped REG.RU Nov 2025
- dropped Ubuntu Nov 2025
- detected Cloudflare Browser Insights Oct 2025
- dropped ADFOX Sep 2025
- dropped AdRiver Sep 2025
- dropped Criteo Sep 2025
- dropped Prebid Sep 2025
- dropped Adobe Audience Manager Aug 2025