| Date | IP Address |
| 2018-07-30 | 199.83.131.70 (ClassC) |
| 2018-09-10 | 199.83.134.70 (ClassC) |
| 2025-04-22 | 145.89.196.208 (ClassC) |
| 2026-01-25 | 145.89.60.246 (ClassC) |
| Date | Domain | IP |
| werkenstudie.hu4u.nl | 2025-02-07 | 145.89.196.208 |
| international.hu4u.nl | 2025-04-19 | 145.89.196.208 |
| www.hu4u.nl | 2025-04-22 | 145.89.196.208 |