🌐DNS
2 A · 2 MX · 4 NS · 1 SOA · 12 TXT
🔒SSL/TLS
DigiCert Inc · TLSv1.2 · expires in 253d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✓ (p=reject)
💻Tech Stack
Host: Korea Telecom · Email: Self-hosted · DNS: AWS Route 53 · Cloudflare
📡HTTP
1 redirect → 403 · HSTS ✗ · CSP ✗ · X-Frame ✓ · Nosniff ✓
🛡️Security
B (155/215) · 1 critical · 2 high
📈Deliverability
A (80/90) · 2 MX · 2 IPs · 4 issue(s)
🔍Subdomains
6 found · 112 answered — images, m, mail, mobile, mx2, www