What powers dd-sloupvcechach.cz?
Last seen Oct 2026 · 7 technologies across 7 categories
CDN
jsDelivr
since Oct 2023
JavaScript libraries
Lightbox
since Nov 2020
Programming languages
Python
since Sep 2020
Security
HSTS
since Sep 2022
UI frameworks
Web frameworks
Django
since Sep 2020
Web servers
gunicorn
since Nov 2025
AI Crawlers
robots.txt could not be read at the last check (Oct 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
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.38 / 10 · ranked #7,741,805 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 7.3 MB · 25 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on INTERNET-CZ Ktis 2, 384 03 Ktis (81.2.235.36)
- DNS: web4u.cz
- Email: MailChannels
- Email security: no SPF record, no DMARC record, DNSSEC signed
- Common Crawl link graph: rank 31,101,774, 2 hosts
DNS records as swept Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped AlmaLinux Dec 2025
- dropped Apache HTTP Server Dec 2025
- dropped mod_wsgi Dec 2025
- dropped OpenSSL Dec 2025