What powers esfl.de?
Last seen Oct 2026 · 30 technologies across 15 categories
CDN
cdnjs
since Nov 2025
Cloudflare
since Nov 2025
Databases
MySQL
since Sep 2026
Documentation
BookStack
since Sep 2026
Hosting
Strato
since Aug 2022
JavaScript frameworks
Stimulus
since Mar 2021
JavaScript graphics
JavaScript libraries
LMS
Moodle
since Jan 2019
Miscellaneous
Programming languages
PHP
since Jan 2019
Security
HSTS
since Oct 2022
Video players
VideoJS
since Apr 2022
Web frameworks
Laravel
since Sep 2026
Web servers
Nginx
since Feb 2020
Webmail
Apple iCloud Mail
since Jan 2023
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 76% desktop
- 24% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.24 / 10 · ranked #9,414,850 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.4 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German
- Weight: 1.6 MB · 24 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on STRATO (81.169.145.91, IPv6)
- DNS: STRATO
- Email: STRATO
- Email security: SPF, DMARC monitor only
- SSL: Sectigo, RSA 2048, wildcard, expires Apr 2027
- Common Crawl link graph: rank 30,456,408, 7 hosts
- Verified with: Adobe, Apple Business
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| cloud.esfl.de | 17 |
| moodle.esfl.de | 15 |
| wiki.esfl.de | 10 |
| bbb.esfl.de | 2 |
Full technology history →
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Recent changes
- dropped Bootstrap Dec 2025