| Date | IP Address |
| 2025-10-30 | 172.67.139.115 (ClassC) |
| 2026-01-04 | 104.21.26.218 (ClassC) |
| Date | Domain | IP |
| mail02.tndr.com | 2025-06-28 | 104.21.26.218 |
| mail3.tndr.com | 2025-08-19 | 104.21.26.218 |
| mx5.tndr.com | 2024-12-27 | 104.21.26.218 |
| barracuda.tndr.com | 2025-05-10 | 172.67.139.115 |
| email.tndr.com | 2025-04-28 | 104.21.26.218 |
| newmail.tndr.com | 2025-05-08 | 172.67.139.115 |
| antispam.tndr.com | 2025-10-17 | 172.67.139.115 |
| correo.tndr.com | 2025-11-09 | 172.67.139.115 |
| mailer.tndr.com | 2025-09-10 | 172.67.139.115 |
| mails.tndr.com | 2025-05-15 | 104.21.26.218 |
| mailhost.tndr.com | 2025-04-06 | 104.21.26.218 |
| mailgw.tndr.com | 2025-02-28 | 104.21.26.218 |
| mailx.tndr.com | 2025-05-11 | 104.21.26.218 |
| box.tndr.com | 2024-03-30 | 172.67.139.115 |
| mailrelay.tndr.com | 2025-10-30 | 172.67.139.115 |
| gateway.tndr.com | 2025-05-10 | 104.21.26.218 |