| Subdomain | First seen | Last seen | DNS | Certificate issuer | Report |
|---|
| api.polystash.com | Sept 2026 | Sept 2026 | Resolves | Google Trust Services | Report → |
| mta-sts.hosted.polystash.com | Sept 2026 | Sept 2026 | Resolves | Google Trust Services | Report → |
| www.polystash.com | Jul 2024 | Aug 2026 | Resolves | Let's Encrypt | Report → |
Found in public certificate transparency logs, which record every publicly trusted certificate. Some subdomains may no longer exist.