What powers 
ackcr.cz?
Last seen Aug 2025 · 10 technologies across 7 categories
Analytics
Matomo Analytics
since Aug 2023
JavaScript libraries
Maps
Google Maps
since Apr 2019
Miscellaneous
Open Graph
since May 2023
Programming languages
PHP
since Sep 2021
Security
HSTS
since May 2023
Web servers
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.33 / 10 · ranked #184,220 of all domains
172 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on WEDOS (89.221.219.8, IPv6)
- DNS: forpsi.cn
- Email: as4u.org
- Email security: no SPF record, no DMARC record
- Common Crawl link graph: rank 1,234,847, 2 hosts
DNS records as swept Sep 2026. How the web is hosted