| Date | IP Address |
| 2017-09-15 | 52.51.141.214 (ClassC) |
| 2024-04-07 | 34.251.45.103 (ClassC) |
| 2024-10-25 | 52.49.56.126 (ClassC) |
| 2024-11-25 | 34.252.74.151 (ClassC) |
| 2025-02-14 | 34.240.196.217 (ClassC) |
| 2025-05-08 | 52.210.17.174 (ClassC) |
| 2025-06-18 | 34.252.22.185 (ClassC) |
| 2025-08-12 | 52.19.191.233 (ClassC) |
| 2025-08-21 | 63.32.15.70 (ClassC) |
| 2026-02-08 | 3.248.81.199 (ClassC) |
| Date | Domain | IP |
| studenten.steunleiden.nl | 2024-07-19 | 34.242.109.200 |
| moocs.steunleiden.nl | 2024-04-07 | 34.251.45.103 |
| www.steunleiden.nl | 2024-04-07 | 34.251.45.103 |