| Date | IP Address |
| 2025-05-05 | 128.208.20.102 (ClassC) |
| Date | Domain | IP |
| irb--98.uwer-bioe-1.infra.washington.edu | 2024-10-20 | 128.208.17.101 |
| irb--99.uwer-bioe-1.infra.washington.edu | 2024-12-06 | 128.208.18.101 |
| irb--101.uwer-bioe-2.infra.washington.edu | 2025-05-05 | 128.208.20.102 |
| irb--99.uwer-bioe-2.infra.washington.edu | 2025-03-13 | 128.208.18.102 |