| Subdomain | First seen | Last seen | DNS | Certificate issuer | Report |
|---|
| buy.endnote.com | Sept 2026 | Oct 2026 | Resolves | Google Trust Services | Report → |
| click.endnote.com | Aug 2026 | Oct 2026 | Resolves | Let's Encrypt | Report → |
| tracking.endnote.com | Sept 2026 | Sept 2026 | Resolves | Let's Encrypt | Report → |
| dev.endnote.com | Aug 2026 | Sept 2026 | Resolves |
Found in public certificate transparency logs, which record every publicly trusted certificate. Some subdomains may no longer exist.