| Date | IP Address |
| 2021-11-02 | 52.11.205.60 (ClassC) |
| 2022-08-24 | 35.82.167.5 (ClassC) |
| 2024-02-27 | 35.155.217.91 (ClassC) |
| 2024-05-13 | 44.237.181.154 (ClassC) |
| 2024-09-11 | 44.226.193.68 (ClassC) |
| 2024-10-21 | 44.237.138.229 (ClassC) |
| 2025-05-02 | 54.189.83.14 (ClassC) |
| 2025-11-18 | 104.18.39.119 (ClassC) |
| Date | Domain | IP |
| s2i2.cacr.caltech.edu | 2024-05-13 | 44.237.181.154 |
| www.s2i2.cacr.caltech.edu | 2024-05-13 | 44.237.181.154 |