| Date | IP Address |
| 2019-12-06 | 184.86.193.126 (ClassC) |
| 2022-04-11 | 23.66.91.220 (ClassC) |
| 2022-05-27 | 23.54.42.229 (ClassC) |
| 2023-07-26 | 23.45.123.5 (ClassC) |
| 2023-12-12 | 104.71.218.97 (ClassC) |
| 2023-12-14 | 96.16.54.138 (ClassC) |
| 2023-12-27 | 23.77.202.17 (ClassC) |
| 2024-03-06 | 23.55.104.51 (ClassC) |
| 2024-08-10 | 104.96.163.135 (ClassC) |
| 2024-10-29 | 23.215.55.55 (ClassC) |
| 2025-05-04 | 23.41.4.91 (ClassC) |
| 2026-01-07 | 23.216.147.138 (ClassC) |
| 2026-02-23 | 23.41.4.81 (ClassC) |
| Date | Domain | IP |
| prod.postnl.be | 2025-07-14 | 23.41.4.91 |
| login-stage.postnl.be | 2025-05-16 | 23.216.147.170 |
| raf.postnl.be | 2024-08-31 | 23.54.19.98 |
| acc.raf.postnl.be | 2025-05-14 | 23.41.4.78 |
| login.postnl.be | 2025-07-01 | 23.59.88.71 |
| fat.postnl.be | 2025-09-21 | 23.41.4.70 |
| cpt.fat.postnl.be | 2025-07-07 | 23.41.4.70 |
| jouw.fat.postnl.be | 2025-08-04 | 23.41.4.72 |
| cpt.pat.postnl.be | 2025-05-17 | 23.41.4.84 |
| jouw.pat.postnl.be | 2025-03-21 | 23.41.4.84 |
| cpt.postnl.be | 2025-08-16 | 23.41.4.91 |
| login-dev.postnl.be | 2025-08-05 | 23.41.4.70 |
| jouw.postnl.be | 2024-10-01 | 23.54.19.169 |
| www.postnl.be | 2024-08-10 | 104.96.163.135 |