What powers ackcr.cz?

Last seen Aug 2025 · 10 technologies across 7 categories

Analytics

Matomo Analytics
since Aug 2023

JavaScript libraries

jQuery v1.4.4
since Apr 2019
lit-element v4.1.1
since Jun 2024
lit-html v3.2.1
since Jun 2024

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

Nginx
since Apr 2019
OpenResty
since Aug 2025

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

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

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

LCP1.5 s
CLS0
TTFB700 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

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