| Date | IP Address |
| 2021-02-09 | 106.75.146.154 (ClassC) |
| 2026-01-27 | 106.75.157.15 (ClassC) |
| Date | Domain | IP |
| imap1.ynnf.net | 2026-01-26 | 106.75.157.15 |
| mailgate.ynnf.net | 2026-01-26 | 106.75.157.15 |
| remote.ynnf.net | 2026-01-26 | 106.75.157.15 |
| post.ynnf.net | 2026-01-27 | 106.75.157.15 |
| mailbox.ynnf.net | 2026-01-26 | 106.75.157.15 |