Found in public certificate transparency logs, which record every publicly trusted certificate. Some subdomains may no longer exist.
| Let's Encrypt |
| Report → |
| app.copy.direct | Aug 2024 | Aug 2024 | No DNS | Let's Encrypt | Report → |
| staging.copy.direct | Aug 2024 | Aug 2024 | No DNS | Let's Encrypt | Report → |
| www.mail.copy.direct | Aug 2024 | Aug 2024 | No DNS | Let's Encrypt | Report → |
| mail.copy.direct | Aug 2024 | Aug 2024 | No DNS | Let's Encrypt | Report → |
| mta-sts.mail.copy.direct | Aug 2024 | Aug 2024 | No DNS | Let's Encrypt | Report → |