| Date | IP Address |
| 2025-01-13 | 98.84.65.180 (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 |