What powers siems-klein.cz?
Last seen Sep 2026 · 25 technologies across 15 categories
Analytics
Caching
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Performance
Programming languages
Tag managers
UI frameworks
Web frameworks
Web servers
Webmail
WordPress plugins
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 75% desktop
- 25% phone
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.27 / 10 · ranked #2,944,459 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 2700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 0.6 MB · 83 requests
- WordPress theme: oxygen-is-not-a-theme · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Siems & Klein CZ
- Industry: Automotive (declares
AutoPartsStore) - Profiles: Facebook, Instagram, LinkedIn, YouTube
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Websupport (37.9.175.163)
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 60,597,252, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Autoptimize Sep 2026
- detected WordPress Super Cache Sep 2026
- dropped Microsoft Clarity May 2026
- detected Nette Framework Feb 2026