📄WHOIS
Beijing Guokeyun Computing Technology Co., Ltd · registered 11 years ago · expires 7/22/2029
🌐DNS
1 A · 3 MX · 2 NS · 1 SOA · 13 TXT
🔒SSL/TLS
Actalis S.p.A. · TLSv1.2 · expires in 143d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✗ (p=none)
💻Tech Stack
Host: Tencent Cloud · Email: Self-hosted · nginx
📡HTTP
4 redirect → 200 · HSTS ✓ · CSP ✗ · X-Frame ✓ · Nosniff ✗
🛡️Security
C (135/215) · 1 critical · 2 high
📈Deliverability
D (53/100) · 3 MX · 3 IPs · 7 issue(s)
🔍Subdomains
2 found · 112 answered — m, www