📄WHOIS
Internet Domain Name System Beijing Engineering Research Center LLC (ZDNS) · registered 29 years ago · expires 3/18/2027
🌐DNS
1 A · 3 MX · 4 NS · 1 SOA · 9 TXT
🔒SSL/TLS
DigiCert, Inc. · TLSv1.3 · expires in 130d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✓ (p=reject)
💻Tech Stack
Host: CHINA UNICOM China169 Backbone · Email: Microsoft 365
📡HTTP
2 redirect → 200 · HSTS ✓ · CSP ✗ · X-Frame ✗ · Nosniff ✓
🛡️Security
C (140/215) · 1 critical · 2 high
⚠️Threats
risk: medium · 1 recommendation(s)
📈Deliverability
A (92/100) · 3 MX · 10 IPs · 2 issue(s)
🔍Subdomains
10 found · 93 answered (19 timed out) — autodiscover, ftp, imap, m, mail, pop +4 more