📄WHOIS
Key-Systems GmbH · registered 3 years ago · expires 11/16/2026
🌐DNS
1 A · 5 MX · 3 NS · 1 PTR · 1 SOA · 3 TXT · 1 AAAA
🔒SSL/TLS
Let's Encrypt · TLSv1.3 · expires in 47d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✗ (p=none)
🔐DNSSEC
signed · valid chain of trust
💻Tech Stack
Host: Hetzner · Email: Google Workspace · nginx
📡HTTP
2 redirect → 200 · HSTS ✗ · CSP ✗ · X-Frame ✓ · Nosniff ✓
🛡️Security
B (160/215) · 1 critical · 2 high
⚠️Threats
risk: low · 1 recommendation(s)
📈Deliverability
A (86/100) · 5 MX · 10 IPs · 4 issue(s)
🔍Subdomains
4 found · 103 answered (9 timed out) — email, static, www, www2