What powers e-serafin.pl?
Last seen Sep 2026 · 8 technologies across 6 categories
Analytics
Google Analytics
since Jul 2019
Authentication
Facebook Login
since Jul 2021
CDN
Google Hosted Libraries
since Feb 2022
JavaScript libraries
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Jul 2019
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
All crawlers blocked
Audience
- 70% phone
- 31% desktop
Poland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.27 / 10 · ranked #1,168,505 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Polish
- Weight: 4.3 MB · 70 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on COMARCH-AS (213.199.213.22)
- DNS: zenbox.pl
- Email: no MX record returned
- Email security: SPF (hard fail), DMARC monitor only
- SSL: DigiCert, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 3,379,858, 2 hosts
- Verified with: Meta Business
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted