What powers culab.ru?
Last seen Oct 2026 · 15 technologies across 11 categories
Issue trackers
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Programming languages
Rich text editors
Security
UI frameworks
Web frameworks
Web servers
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 Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
- Oct 2026 *: Restricted (was Blocked)
AI Crawlers
No AI crawlers blocked
Audience
- 90% desktop
- 10% phone
Russia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.09 / 10 · ranked #120,683,368 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 1.8 MB · 41 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- DNS: selectel.ru
- Email: no MX record returned
- Email security: SPF (neutral)
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 118,371,242
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| git.culab.ru | 13 |
| ejudge.culab.ru | 2 |
Full technology history →
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Recent changes
- dropped Nginx Mar 2026