| Date | IP Address |
| 2014-06-18 | 178.23.186.177 (ClassC) |
| 2019-06-14 | 52.18.159.227 (ClassC) |
| 2023-08-26 | 34.247.199.248 (ClassC) |
| 2023-11-01 | 52.30.183.195 (ClassC) |
| 2024-01-11 | 52.213.97.163 (ClassC) |
| 2024-02-24 | 63.32.148.38 (ClassC) |
| 2024-03-26 | 54.229.80.153 (ClassC) |
| 2024-09-09 | 34.243.214.124 (ClassC) |
| 2024-10-31 | 52.49.230.30 (ClassC) |
| 2025-01-29 | 54.220.180.244 (ClassC) |
| Date | Domain | IP |
| lab.randstad.nl | 2024-07-29 | 52.215.245.144 |
| brandportal.randstad.nl | 2024-09-01 | 204.246.191.44 |
| image.email.randstad.nl | 2014-12-21 | 184.27.202.106 |
| click.email.randstad.nl | 2014-12-16 | 68.232.203.70 |
| spaservices.randstad.nl | 2024-12-10 | 34.249.27.136 |
| werkpocket.randstad.nl | 2024-07-19 | 99.80.100.108 |
| www.randstad.nl | 2023-11-01 | 52.30.183.195 |