| Date | IP Address |
| 2017-01-01 | 52.210.35.169 (ClassC) |
| 2019-12-12 | 104.114.0.182 (ClassC) |
| 2023-05-28 | 23.195.73.24 (ClassC) |
| 2023-11-26 | 23.48.104.102 (ClassC) |
| 2024-10-31 | 23.215.55.182 (ClassC) |
| 2025-08-19 | 23.41.4.87 (ClassC) |
| 2026-01-29 | 23.41.4.91 (ClassC) |
| Date | Domain | IP |
| quotamanager.developer.postnl.nl | 2024-02-22 | 23.192.230.92 |
| apimanager.developer.postnl.nl | 2025-11-13 | 23.41.4.91 |