What powers 
sigma-star.at?
Last seen Sep 2026 · 10 technologies across 8 categories
Analytics
Hosting
Miscellaneous
Security
Static site generator
UI frameworks
Web servers
Webmail
AI Crawlers
Does not block any of the 33 AI crawlers we track in its robots.txt. Checked Oct 2026.
Training crawlers
- Applebot-Extended Allowed
- Bytespider Allowed
- CCBot Allowed
- ClaudeBot Allowed
- Google-Extended Allowed
- GPTBot Allowed
- meta-externalagent Allowed
Search and AI assistants
- Claude-SearchBot Allowed
- OAI-SearchBot Allowed
- PerplexityBot Allowed
User-request fetchers
- ChatGPT-User Allowed
- Perplexity-User Allowed
The other 21 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt found
- llms-full.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt, llms-full.txt
Audience
- 60% phone
- 40% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.87 / 10 · ranked #674,862 of all domains
46 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 1.2 MB · 26 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- sigma star gmbh
- Profiles: LinkedIn
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Hetzner (78.46.147.27)
- DNS: Hetzner
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 7,098,066, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sigma-star.at | 10 |
| blog.sigma-star.at | 5 |
Full technology history →
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Recent changes
- detected Tailwind CSS Jan 2026