What powers semplan21.de?
Last seen Oct 2026 · 13 technologies across 9 categories
Font scripts
Bootstrap Icons
since Aug 2023
Hosting
IONOS
since Aug 2023
Hosting panels
Plesk
since Nov 2024
JavaScript libraries
Select2
since Aug 2023
Miscellaneous
Popper
since Aug 2023
Programming languages
Rich text editors
UI frameworks
Web servers
Apache HTTP Server
since Aug 2023
Nginx
since Nov 2024
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
All crawlers blocked
Audience
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.83 / 10 · ranked #1,911,153 of all domains
18 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: German
- Weight: 0.5 MB · 20 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on IONOS (217.160.0.46, IPv6)
- DNS: IONOS
- Email: IONOS
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 7,659,381, 4 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| agnf.semplan21.de | 12 |
| civitas.semplan21.de | 12 |
| ehbs.semplan21.de | 11 |