| Date | IP Address |
| 2019-03-20 | 13.249.122.14 (ClassC) |
| 2019-03-25 | 52.85.115.72 (ClassC) |
| 2019-03-25 | 52.85.115.76 (ClassC) |
| 2019-04-25 | 54.230.163.77 (ClassC) |
| 2019-04-25 | 54.230.163.22 (ClassC) |
| 2019-04-25 | 54.230.163.56 (ClassC) |
| 2019-07-01 | 54.230.102.4 (ClassC) |
| 2019-09-19 | 13.35.115.83 (ClassC) |
| 2020-02-08 | 13.227.43.39 (ClassC) |
| 2026-02-05 | 3.133.242.238 (ClassC) |
| Date | Domain | IP |
| static.readup.com | 2024-09-28 | 99.84.66.108 |
| blog.readup.com | 2025-09-20 | 3.133.242.238 |