🌐DNS
1 A · 1 MX · 2 NS · 1 PTR · 1 SOA · 9 TXT
🔒SSL/TLS
GlobalSign nv-sa · TLSv1.3 · expires in 177d · 3 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✗
💻Tech Stack
Host: Pusan National University · Email: Self-hosted
📡HTTP
2 redirect → 200 · HSTS ✓ · CSP ✗ · X-Frame ✗ · Nosniff ✗
🛡️Security
C (135/215) · 1 critical · 2 high
⚠️Threats
risk: low · 1 recommendation(s)
📈Deliverability
B (82/100) · 1 MX · 6 IPs · 3 issue(s)
🔍Subdomains
10 found · 101 answered (11 timed out) — imap, m, mail, media, mobile, pop3 +4 more
📚Web Archive
first snapshot 1997-01-21 · 29y archived