What powers 
csef.ru?
Last seen Aug 2026 · 18 technologies across 9 categories
Analytics
Yandex.Metrika
since Feb 2021
CDN
Font scripts
Google Font API
since Apr 2024
JavaScript Frameworks
JavaScript libraries
Programming languages
Video Players
YouTube
since May 2017
Web Frameworks
Web Servers
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
Russia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.87 / 10 · ranked #673,597 of all domains
122 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.9 s |
| CLS | 0.45 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 8.3 MB · 128 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on I-SERVERS-EAST (185.87.50.156)
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 516,969, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| csef.ru | 18 |
| www.csef.ru | 14 |