What powers 
grundschule-ronsdorf.de?
Last seen Oct 2026 · 14 technologies across 10 categories
CDN
cdnjs
since Sep 2023
Cloudflare
since Sep 2023
CMS
Joomla
since Oct 2021
Font scripts
JavaScript libraries
Miscellaneous
K2
since Oct 2021
Open Graph
since Oct 2022
Programming languages
PHP
since Oct 2021
Security
HSTS
since Oct 2022
UI frameworks
Bootstrap
since Oct 2021
Web servers
Apache HTTP Server
since Oct 2021
Widgets
FlexSlider
since Oct 2021
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
4.76 / 10 · ranked #272,452 of all domains
125 referring domains · OpenPageRank
Page
- Language: German (Germany)
- Weight: 6.8 MB · 73 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Hetzner (49.12.62.52)
- DNS: controlserver.net
- Email: controlserver.net
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 186,418, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted