📄WHOIS
CSL Computer Service Langenbach GmbH d/b/a joker.com · registered 34 years ago · expires 2/13/2036
🌐DNS
2 A · 4 MX · 2 NS · 2 PTR · 1 SOA · 11 TXT · 1 AAAA
🔒SSL/TLS
Let's Encrypt · TLSv1.3 · expires in 43d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✓ (p=reject)
💻Tech Stack
Host: One.com A/S · Email: Self-hosted
📡HTTP
3 redirect → 200 · HSTS ✓ · CSP ✗ · X-Frame ✗ · Nosniff ✗
🛡️Security
B (155/215) · 1 critical · 2 high
⚠️Threats
risk: medium · 1 recommendation(s)
📈Deliverability
A+ (98/100) · 4 MX · 4 IPs · 1 issue(s)
🔍Subdomains
0 found · 112 answered