| Date | IP Address |
| 2023-10-09 | 23.221.22.183 (ClassC) |
| 2023-10-30 | 23.38.191.48 (ClassC) |
| 2023-11-01 | 23.194.116.7 (ClassC) |
| 2023-11-02 | 104.71.143.18 (ClassC) |
| 2023-11-20 | 184.28.249.167 (ClassC) |
| 2023-11-26 | 23.12.147.74 (ClassC) |
| 2023-12-19 | 104.71.218.131 (ClassC) |
| 2024-03-26 | 23.59.154.138 (ClassC) |
| 2024-05-18 | 23.220.103.7 (ClassC) |
| 2024-08-10 | 23.56.237.117 (ClassC) |
| 2024-08-22 | 23.192.230.84 (ClassC) |
| 2024-11-02 | 23.64.119.12 (ClassC) |
| 2024-12-10 | 23.209.92.105 (ClassC) |
| 2025-01-13 | 23.38.191.137 (ClassC) |
| 2025-01-15 | 23.203.49.14 (ClassC) |
| 2025-01-15 | 23.203.49.51 (ClassC) |
| 2025-02-01 | 96.7.218.224 (ClassC) |
| 2025-03-25 | 23.210.244.202 (ClassC) |
| 2026-02-24 | 23.41.4.87 (ClassC) |
| 2026-03-07 | 23.41.4.86 (ClassC) |
| Date | Domain | IP |
| accept.cbsmdm.postnl.post | 2025-10-01 | 23.41.4.84 |
| accept.shipmentmanager.postnl.post | 2025-10-31 | 23.203.134.229 |
| slotallocator.postnl.post | 2026-02-09 | 23.41.4.91 |
| clients.postnl.post | 2024-02-14 | 104.96.163.144 |
| www.postnl.post | 2024-07-17 | 23.41.4.87 |