| Date | IP Address |
| 2022-12-20 | 84.53.185.146 (ClassC) |
| 2024-11-06 | 23.221.22.180 (ClassC) |
| 2025-11-13 | 23.41.4.86 (ClassC) |
| Date | Domain | IP |
| workbench-staging.cisecurity.org | 2025-09-02 | 104.18.25.122 |
| learn.cisecurity.org | 2025-06-22 | 34.237.219.119 |
| surveys.cisecurity.org | 2025-11-13 | 23.41.4.86 |