What powers qlever.dev?
Last seen Aug 2026 · 10 technologies across 9 categories
CDN
jQuery CDN
since Jan 2026
Editors
JavaScript graphics
JavaScript libraries
Programming languages
Python
since Jan 2026
Security
HSTS
since Jan 2026
UI frameworks
Web frameworks
Django
since Jan 2026
Web servers
gunicorn
since Jan 2026
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
3.07 / 10 · ranked #1,467,789 of all domains
22 referring domains · OpenPageRank
Page
- Weight: 1.9 MB · 28 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on BELWUE BelWue-Koordination (132.230.150.102)
- Email: uni-freiburg.de
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 1,946,933, 3 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted