| Subdomain | First seen | Last seen | DNS | Certificate issuer | Report |
|---|
| cheetah.seedvault.1f31a.net | Feb 2024 | Jun 2024 | Resolves | Let's Encrypt | Report → |
| matrix.1f31a.net | Feb 2023 | May 2024 | Resolves | Let's Encrypt | Report → |
| dynamic-dns.1f31a.net | Sept 2022 | Jan 2023 | No DNS | Amazon | Report → |
| sd.1f31a.net | Sept 2022 | Jan 2023 | |
Found in public certificate transparency logs, which record every publicly trusted certificate. Some subdomains may no longer exist.