Found in public certificate transparency logs, which record every publicly trusted certificate. Some subdomains may no longer exist.
| Report → |
| mail.kru4.com | Feb 2017 | Aug 2018 | No DNS | Let's Encrypt | Report → |
| webdisk.kru4.com | Aug 2018 | Aug 2018 | No DNS | Let's Encrypt | Report → |
| webmail.kru4.com | Aug 2018 | Aug 2018 | No DNS | Let's Encrypt | Report → |