📄WHOIS
Akademickie Centrum Komputerowe CYFRONET AGH · registered 25 years ago · expires 12/31/2026
🌐DNS
1 A · 1 MX · 4 NS · 1 PTR · 1 SOA · 1 TXT
🔒SSL/TLS
Let's Encrypt · TLSv1.3 · expires in 74d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✓ (p=quarantine)
💻Tech Stack
Host: Academic Computer Centre CYFRONET AGH · Email: Self-hosted · nginx
📡HTTP
HTTP 200 · HSTS ✗ · CSP ✗ · X-Frame ✗ · Nosniff ✗
🛡️Security
B (155/215) · 1 critical · 2 high
📈Deliverability
A (84/90) · 1 MX · 1 IPs · 3 issue(s)
🔍Subdomains
6 found · 103 answered (9 timed out) — dns, forum, m, mobile, www, www2