| Date | IP Address |
| 2021-02-08 | 35.197.249.2 (ClassC) |
| 2025-08-07 | 172.67.208.26 (ClassC) |
| Date | Domain | IP |
| mx20.uctoday.com | 2025-04-27 | 104.21.37.122 |
| server1.uctoday.com | 2025-04-26 | 172.67.208.26 |
| mail02.uctoday.com | 2025-04-27 | 172.67.208.26 |
| mail12.uctoday.com | 2025-01-25 | 104.21.37.122 |
| server2.uctoday.com | 2024-07-11 | 104.26.11.199 |
| ns2.uctoday.com | 2024-07-25 | 104.26.11.199 |
| mx2.uctoday.com | 2024-07-11 | 104.26.11.199 |
| relay2.uctoday.com | 2024-11-10 | 104.21.37.122 |
| mail9.uctoday.com | 2025-06-18 | 104.21.37.122 |
| mailgate.uctoday.com | 2025-08-01 | 104.21.37.122 |
| mail.uctoday.com | 2024-07-27 | 172.67.75.61 |
| smtpmail.uctoday.com | 2024-07-25 | 104.26.11.199 |
| spam.uctoday.com | 2024-07-18 | 104.26.11.199 |
| correo.uctoday.com | 2024-07-14 | 104.26.11.199 |
| vip.uctoday.com | 2024-10-23 | 172.67.208.26 |
| smtp.uctoday.com | 2024-07-13 | 172.67.75.61 |
| authsmtp.uctoday.com | 2025-01-09 | 104.21.37.122 |
| admanager.uctoday.com | 2024-07-21 | 104.26.10.199 |
| scheduler.uctoday.com | 2024-07-21 | 104.26.10.199 |
| postmaster.uctoday.com | 2025-05-04 | 104.21.37.122 |
| mailserver.uctoday.com | 2025-05-06 | 104.21.37.122 |
| smtps.uctoday.com | 2024-07-31 | 172.67.75.61 |
| internet.uctoday.com | 2025-05-06 | 172.67.208.26 |
| mailhost.uctoday.com | 2025-06-29 | 104.21.37.122 |
| post.uctoday.com | 2024-09-23 | 104.21.37.122 |
| mailgw.uctoday.com | 2025-02-12 | 104.21.37.122 |
| www.uctoday.com | 2024-04-15 | 172.67.75.61 |
| 2fwww.uctoday.com | 2025-01-24 | 172.67.208.26 |
| 252fwww.uctoday.com | 2024-08-12 | 172.67.75.61 |
| mx.uctoday.com | 2025-08-07 | 172.67.208.26 |
| mailbox.uctoday.com | 2025-03-25 | 172.67.208.26 |
| mbox.uctoday.com | 2025-05-08 | 172.67.208.26 |
| relay.uctoday.com | 2025-07-09 | 104.21.37.122 |