What powers 
qvls.de?
Last seen Aug 2026 · 24 technologies across 13 categories
CMS
WordPress
since Apr 2023
Databases
MySQL
since Apr 2023
Hosting
WordPress Multisite
since Jul 2023
JavaScript libraries
Swiper
since Nov 2023
Miscellaneous
Open Graph
since Apr 2023
RSS
since Apr 2023
Operating systems
Debian
since Apr 2023
Performance
Priority Hints
since May 2024
Programming languages
PHP
since Apr 2023
UI frameworks
Bootstrap
since May 2024
Video players
Web servers
Apache HTTP Server
since Apr 2023
WordPress plugins
Gutenberg
since Jun 2023
Polylang
since May 2024
TablePress
since Aug 2023
The Events Calendar
since Apr 2023
WordPress themes
AI Crawlers
Restricts 16 of 33 AI crawlers we track by name in its robots.txt. Checked Nov 2026.
Training crawlers
- AI2Bot Restricted
- Applebot-Extended Restricted
- Bytespider Restricted
- CCBot Restricted
- ClaudeBot Restricted
- cohere-training-data-crawler Restricted
- FacebookBot Restricted
- Google-Extended Restricted
- GoogleOther Restricted
- GPTBot Restricted
- img2dataset Restricted
- meta-externalagent Restricted
- Webzio-Extended Restricted
Search and AI assistants
- Amazonbot Restricted
- DuckAssistBot Restricted
- YouBot Restricted
The other 17 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 found
- ai.txt not found
- Sep 2026 gptbot added to robots.txt
- Sep 2026 bytespider added to robots.txt
- Sep 2026 claudebot added to robots.txt
- Sep 2026 ccbot added to robots.txt
- Sep 2026 cohere-ai added to robots.txt
- Sep 2026 ai2bot added to robots.txt
AI Crawlers
16 of 33 AI crawlers restricted
Open Page Rank
4.06 / 10 · ranked #528,760 of all domains
64 referring domains · OpenPageRank
Infrastructure
- Hosted on Squarespace (198.49.23.144)
- DNS: uni-hannover.de
- Email: no MX record returned
- Email security: SPF (hard fail)
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 2,479,984, 7 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| qvls.de | 20 |
| eqtc2023.qvls.de | 16 |
Full technology history →
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