| Date | IP Address |
| 2023-07-02 | 54.209.63.70 (ClassC) |
| 2023-08-25 | 3.90.96.235 (ClassC) |
| 2024-02-03 | 23.20.149.239 (ClassC) |
| 2024-10-08 | 184.72.77.78 (ClassC) |
| 2024-10-21 | 52.201.119.152 (ClassC) |
| 2024-11-19 | 54.159.39.108 (ClassC) |
| 2024-11-24 | 3.231.72.27 (ClassC) |
| 2024-12-03 | 3.225.59.97 (ClassC) |
| 2025-01-04 | 54.204.5.2 (ClassC) |
| 2025-01-16 | 44.215.53.241 (ClassC) |
| 2025-02-05 | 3.229.238.127 (ClassC) |
| 2025-02-19 | 3.219.4.107 (ClassC) |
| 2025-02-26 | 100.29.74.55 (ClassC) |
| 2025-06-04 | 44.211.110.95 (ClassC) |
| 2025-06-15 | 44.206.12.68 (ClassC) |
| 2025-06-22 | 52.23.45.143 (ClassC) |
| 2025-07-02 | 54.160.194.43 (ClassC) |
| 2025-07-18 | 52.21.243.5 (ClassC) |
| 2025-07-20 | 34.202.106.108 (ClassC) |
| 2025-07-29 | 52.72.142.124 (ClassC) |
| 2025-08-21 | 23.23.2.51 (ClassC) |
| 2026-02-18 | 52.202.117.14 (ClassC) |
| Date | Domain | IP |
| www.houghtonmifflin.com | 2024-11-24 | 54.88.81.136 |