What powers undrtn.pl?
Last seen Sep 2026 · 22 technologies across 10 categories
Analytics
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Programming languages
Security
Web servers
WordPress plugins
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Poland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.73 / 10 · ranked #4,793,194 of all domains
8 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Polish (Poland)
- Weight: 5.9 MB · 36 requests
- WordPress theme: zomer · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on PL-BEYOND-AS (2.57.137.47)
- DNS: zenbox.pl
- Email: zenbox.pl
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P384, expires Nov 2026
- Common Crawl link graph: rank 1,561,618
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- dropped Google Sign-in May 2026
- dropped Google Tag Manager May 2026
- dropped Site Kit May 2026
- detected Google Sign-in Feb 2026
- detected Google Tag Manager Feb 2026
- detected Site Kit Feb 2026
- detected Twitter Emoji (Twemoji) Jan 2026
- dropped Google Sign-in Dec 2025
- dropped Google Tag Manager Dec 2025
- dropped Site Kit Dec 2025
- detected Embed Optimizer Nov 2025
- detected Optimization Detective Nov 2025
- detected Performance Lab Nov 2025