What powers 
polona2.pl?
Last seen Oct 2026 · 12 technologies across 7 categories
Analytics
JavaScript frameworks
JavaScript libraries
Miscellaneous
Security
reCAPTCHA
since Jun 2023
UI 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 Nov 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 52% desktop
- 42% phone
- 5% tablet
Poland
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.80 / 10 · ranked #715,911 of all domains
40 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.8 s |
| INP | 350 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English (United States)
- Weight: 1.5 MB · 34 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on BN Biblioteka Narodowa (91.238.85.199)
- DNS: home.pl
- Email: no MX record returned
- SSL: Let's Encrypt, ECDSA P384, expires Dec 2026
- Common Crawl link graph: rank 591,729
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Full technology history →
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Recent changes
- detected OpenResty Dec 2025