📄WHOIS
Beijing Guokeyun Computing Technology Co., Ltd · registered 12 years ago · expires 7/2/2028
🌐DNS
2 A · 2 MX · 4 NS · 1 SOA · 2 TXT · 1 AAAA
🔒SSL/TLS
DigiCert Inc · TLSv1.2 · expires in 169d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✗
💻Tech Stack
Host: Shenzhen Tencent Computer Systems Company Limited · Email: Self-hosted
📡HTTP
1 redirect → 200 · HSTS ✗ · CSP ✗ · X-Frame ✗ · Nosniff ✗
🛡️Security
B (155/215) · 1 critical · 2 high
📈Deliverability
F (28/90) · 0 MX · 0 IPs · 4 issue(s)
🔍Subdomains
wildcard DNS — every guessed name resolves