What powers 
engeler.de?
Last seen Jul 2026 · 3 technologies across 3 categories
Security
HSTS
since Feb 2024
Web servers
Apache HTTP Server
since Feb 2024
Webmail
Proton Mail
since May 2025
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
3.53 / 10 · ranked #865,443 of all domains
67 referring domains · OpenPageRank
Infrastructure
- Hosted on SINMA-ASN (83.223.89.23)
- DNS: sinma.de
- Email: sinma.de
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 733,119, 2 hosts
- Verified with: Proton
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted