What powers 
sz.de?
Last seen Jul 2023 · 20 technologies across 15 categories
Caching
CDN
CMS
Databases
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Page builders
Programming languages
Retargeting
SEO
Web servers
Widgets
WordPress themes
AI Crawlers
Blocks 7 of 33 AI crawlers we track by name in its robots.txt, restricts 1 more. Checked Oct 2026.
Training crawlers
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Google-Extended Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
Search and AI assistants
- PerplexityBot Blocked
- Amazonbot Restricted
User-request fetchers
- ChatGPT-User Blocked
The other 25 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
- Sep 2026 claudebot added to robots.txt
- Sep 2026 anthropic-ai added to robots.txt
- Sep 2026 chatgpt-user added to robots.txt
- Sep 2026 claude-web added to robots.txt
- Sep 2026 perplexitybot added to robots.txt
- Sep 2026 cohere-ai added to robots.txt
AI Crawlers
7 of 33 AI crawlers blocked
Audience
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
7.07 / 10 · ranked #34,784 of all domains
504 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 75 ms |
| CLS | 0.15 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on BOREUS (208.82.73.61)
- DNS: boreus.de
- Email: Microsoft 365
- Email security: no SPF record, DMARC reject
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 17,634, 16 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| cinemathek.sz.de | 19 |
| nl-link.sz.de | 1 |