| Date | IP Address |
| 2022-07-18 | 23.47.51.133 (ClassC) |
| 2023-03-30 | 23.220.161.217 (ClassC) |
| 2023-10-03 | 23.221.22.82 (ClassC) |
| 2023-12-14 | 23.221.22.85 (ClassC) |
| 2024-03-20 | 23.63.231.210 (ClassC) |
| 2024-08-27 | 23.192.230.77 (ClassC) |
| 2024-08-30 | 23.213.203.105 (ClassC) |
| 2024-09-26 | 23.56.169.90 (ClassC) |
| 2025-10-15 | 23.41.4.69 (ClassC) |
| 2025-12-16 | 23.41.4.78 (ClassC) |
| Date | Domain | IP |
| appservice.test.stadholland.nl | 2025-08-20 | 23.41.4.78 |
| authenticatie.test.stadholland.nl | 2024-08-27 | 23.192.230.77 |
| aanmelding.test.stadholland.nl | 2024-08-28 | 23.192.230.77 |
| aanmelden.test.stadholland.nl | 2025-06-08 | 23.41.4.78 |
| mijn.test.stadholland.nl | 2025-10-03 | 23.41.4.78 |
| www.test.stadholland.nl | 2025-10-14 | 23.41.4.69 |