What powers hgs-calw.de?
Last seen Sep 2026 · 6 technologies across 6 categories
CMS
Contao
since Dec 2021
JavaScript libraries
Programming languages
Security
HSTS
since Sep 2022
UI frameworks
Web servers
Apache HTTP Server
since Feb 2020
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 not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.99 / 10 · ranked #1,608,508 of all domains
30 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 0.7 MB · 20 requests
- Structured data: JSON-LD, Microdata
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Hermann Gundert School
- Country: Germany
From Wikidata (CC0).
Infrastructure
- Hosted on SIT-AS (178.251.89.100)
- Email: hgs-calw.de
- Email security: SPF (soft fail), no DMARC record
- SSL: DigiCert, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 10,331,255, 3 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted