📄WHOIS
GMO Internet, Inc. · registered 18 years ago
🌐DNS
1 A · 1 MX · 3 NS · 1 PTR · 1 SOA · 3 TXT · 1 AAAA
🔒SSL/TLS
Let's Encrypt · TLSv1.3 · expires in 58d · 3 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✓ (p=reject)
💻Tech Stack
Host: SAKURA Internet Inc. · Email: Self-hosted · nginx
📡HTTP
1 redirect → 200 · HSTS ✓ · CSP ✓ · X-Frame ✓ · Nosniff ✓
🛡️Security
C (145/215) · 1 critical · 2 high
📈Deliverability
F (34/90) · 1 MX · 0 IPs · 4 issue(s)
🔍Subdomains
wildcard DNS — every guessed name resolves