| Date | IP Address |
| 2024-05-13 | 52.203.57.83 (ClassC) |
| 2024-06-03 | 52.200.72.28 (ClassC) |
| 2024-07-05 | 52.5.108.175 (ClassC) |
| 2024-08-14 | 54.83.224.177 (ClassC) |
| 2025-03-15 | 54.175.249.5 (ClassC) |
| 2025-03-27 | 54.236.201.4 (ClassC) |
| 2025-04-12 | 54.86.126.191 (ClassC) |
| 2025-06-14 | 3.215.60.17 (ClassC) |
| 2025-06-23 | 35.168.44.236 (ClassC) |
| 2025-07-20 | 18.209.76.160 (ClassC) |
| 2025-09-07 | 3.225.202.43 (ClassC) |
| 2025-10-20 | 18.205.186.10 (ClassC) |
| 2025-11-17 | 98.85.14.70 (ClassC) |
| Date | Domain | IP |
| woodwing-la.prod.ips-prod.hmhco.com | 2024-06-03 | 44.195.207.248 |
| woodwing-rdg.prod.ips-prod.hmhco.com | 2023-11-16 | 3.229.175.164 |
| hip.prod.ips-prod.hmhco.com | 2024-05-13 | 52.203.57.83 |
| hots.prod.ips-prod.hmhco.com | 2025-01-13 | 98.84.65.180 |
| woodwing-alt.prod.ips-prod.hmhco.com | 2024-04-13 | 54.144.42.64 |
| woodwing-ast.prod.ips-prod.hmhco.com | 2024-05-14 | 34.237.183.155 |