| Date | IP Address |
| 2021-04-01 | 23.42.158.209 (ClassC) |
| 2021-04-27 | 104.125.2.138 (ClassC) |
| 2021-10-06 | 204.237.231.201 (ClassC) |
| 2022-02-03 | 67.220.142.28 (ClassC) |
| 2022-10-28 | 23.48.210.90 (ClassC) |
| 2023-03-01 | 23.205.110.133 (ClassC) |
| 2024-08-31 | 104.98.114.195 (ClassC) |
| 2025-02-13 | 23.54.19.152 (ClassC) |
| 2025-02-19 | 23.56.168.161 (ClassC) |
| 2025-04-17 | 23.192.230.135 (ClassC) |
| 2025-05-14 | 23.192.230.134 (ClassC) |
| Date | Domain | IP |
| app.join.engineeringim.com | 2025-04-23 | 147.154.52.156 |
| images.join.engineeringim.com | 2024-08-31 | 104.98.114.195 |
| go.engineeringim.com | 2025-04-25 | 130.35.229.170 |
| www.engineeringim.com | 2023-12-11 | 104.21.9.35 |