📄WHOIS
Markmonitor Inc. · registered 29 years ago · expires 8/23/2026
🌐DNS
3 A · 2 MX · 4 NS · 3 PTR · 1 SOA · 22 TXT
🔒SSL/TLS
invalid — Let's Encrypt · TLSv1.2 · expires in 69d · 1 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✓ (p=reject)
💻Tech Stack
Host: Amazon Web Services · Email: Proofpoint · DNS: AWS Route 53
📡HTTP
1 redirect → 200 · HSTS ✗ · CSP ✗ · X-Frame ✓ · Nosniff ✓
🛡️Security
B (160/225) · 1 critical · 3 high
📈Deliverability
A (88/100) · 2 MX · 2 IPs · 2 issue(s)
🔍Subdomains
4 found · 113 answered — login, m, preview, www