📄WHOIS
Hong Kong Domain Name Registration Company Limited
🌐DNS
2 A · 1 MX · 2 NS · 2 PTR · 1 SOA · 14 TXT
🔒SSL/TLS
DigiCert Inc · TLSv1.3 · expires in 190d · 3 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✗ (p=none)
💻Tech Stack
Host: The Hong Kong Polytechnic University · Email: Microsoft 365 · nginx
📡HTTP
1 redirect → 200 · HSTS ✓ · CSP ✓ · X-Frame ✓ · Nosniff ✓
🛡️Security
C (140/225) · 1 critical · 3 high
⚠️Threats
risk: low · 1 recommendation(s)
📈Deliverability
A (89/100) · 1 MX · 3 IPs · 3 issue(s)
🔍Subdomains
5 found · 113 answered — autodiscover, mail, smtp, www, www2
📚Web Archive
no snapshots found