| Subdomain | First seen | Last seen | DNS | Certificate issuer | Report |
|---|
| autodiscover.sentplex.com | Nov 2018 | Mar 2021 | Resolves | Let's Encrypt | Report → |
| cpanel.sentplex.com | Nov 2018 | Mar 2021 | Resolves | Let's Encrypt | Report → |
| cpcalendars.sentplex.com | May 2020 | Mar 2021 | Resolves | Let's Encrypt | Report → |
| cpcontacts.sentplex.com | May 2020 | Mar 2021 |
Found in public certificate transparency logs, which record every publicly trusted certificate. Some subdomains may no longer exist.