What powers 4usr.ru?
Last seen Aug 2026 · 5 technologies across 4 categories
Font scripts
Google Font API
since Jun 2026
JavaScript frameworks
React
since Jun 2026
Miscellaneous
HTTP/3
since Jun 2026
Web servers
Caddy
since Jun 2026
AI Crawlers
robots.txt could not be read at the last check (Aug 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 100% phone
Russia
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 2.8 s |
| INP | 125 ms |
| CLS | 0.1 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.7 MB · 36 requests
Homepage as crawled by the HTTP Archive, Sep 2026.