What powers 
siemens-gymnasium-berlin.de?
Last seen Sep 2026 · 13 technologies across 11 categories
CDN
CMS
Font scripts
Hosting
Strato
since Aug 2022
JavaScript libraries
Miscellaneous
PWA
since Aug 2022
Operating systems
UNIX
since Jan 2019
Programming languages
Rich text editors
CKEditor
since Aug 2019
Web servers
Webmail
Apple iCloud Mail
since Jan 2023
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 79% phone
- 21% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.43 / 10 · ranked #967,559 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 4.9 MB · 59 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on STRATO (81.169.145.82, IPv6)
- DNS: STRATO
- Email: STRATO
- Email security: no SPF record, DMARC reject
- SSL: Sectigo, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 216,097, 11 hosts
- Verified with: Apple Business, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| siemens-gymnasium-berlin.de | 13 |
| www.siemens-gymnasium-berlin.de | 13 |