| Date | IP Address |
| 2025-05-03 | 104.21.48.55 (ClassC) |
| 2025-07-21 | 172.67.178.207 (ClassC) |
| 2026-02-12 | 104.21.28.123 (ClassC) |
| Date | Domain | IP |
| apibeta.retainful.com | 2025-01-16 | 52.84.162.51 |
| static.retainful.com | 2024-08-04 | 18.161.6.122 |
| apiref.retainful.com | 2021-07-28 | 99.84.64.104 |
| api.retainful.com | 2024-02-10 | 18.161.6.119 |
| js.retainful.com | 2024-09-05 | 3.163.24.84 |
| www.retainful.com | 2025-01-10 | 172.67.178.207 |