What powers 
forumkarlin.cz?
Last seen Sep 2026 · 13 technologies across 11 categories
Analytics
CMS
Databases
JavaScript libraries
Miscellaneous
Performance
Programming languages
Security
Web servers
Webmail
WordPress plugins
AI Crawlers
Blocks 4 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Bytespider Blocked
- ClaudeBot Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
The other 29 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
4 of 33 AI crawlers blocked
Audience
- 73% phone
- 27% desktop
Czechia
Slovakia
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.35 / 10 · ranked #426,929 of all domains
81 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Czech
- Weight: 1.6 MB · 53 requests
- WordPress theme: forum · all themes
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on NFX_ZSPO (212.79.111.58)
- DNS: archa.cz
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 2,879,352, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped WordPress Block Editor Nov 2025