📄WHOIS
CSL Computer Service Langenbach GmbH d/b/a joker.com · registered 33 years ago · expires 4/29/2028
🌐DNS
1 A · 2 MX · 3 NS · 1 PTR · 1 SOA · 2 TXT · 1 AAAA
🔒SSL/TLS
Let's Encrypt · TLSv1.3 · expires in 78d · 6 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✗
🔐DNSSEC
signed · valid chain of trust
💻Tech Stack
Email: Self-hosted · Apache
📡HTTP
1 redirect → 200 · HSTS ✓ · CSP ✗ · X-Frame ✗ · Nosniff ✗
🛡️Security
B (165/215) · 1 critical · 2 high
📈Deliverability
B (70/90) · 2 MX · 2 IPs · 5 issue(s)
🔍Subdomains
1 found · 111 answered (1 timed out) — mail
📚Web Archive
first snapshot 1996-11-14 · 29y archived