🌐DNS
1 A · 1 MX · 2 NS · 1 SOA · 1 TXT
🔒SSL/TLS
GlobalSign nv-sa · TLSv1.3 · expires in 97d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✗
💻Tech Stack
Host: Hanoi Telecom JSC · Email: Self-hosted · nginx
📡HTTP
1 redirect → 200 · HSTS ✓ · CSP ✓ · X-Frame ✓ · Nosniff ✓
🛡️Security
C (145/215) · 1 critical · 2 high
📈Deliverability
F (26/90) · 1 MX · 0 IPs · 4 issue(s)
🔍Subdomains
3 found · 112 answered — m, mail, www
📚Web Archive
first snapshot 2007-01-09 · 19y archived