| Date | IP Address |
| 2024-11-25 | 44.194.51.224 (ClassC) |
| 2025-01-22 | 54.86.54.86 (ClassC) |
| 2025-05-26 | 104.18.22.207 (ClassC) |
| 2025-10-17 | 104.18.23.207 (ClassC) |
| Date | Domain | IP |
| 365v3.himss.org | 2024-11-24 | 54.243.40.74 |
| test.365.himss.org | 2025-05-02 | 44.206.22.199 |
| brand.himss.org | 2019-08-04 | 13.224.29.46 |
| hde.himss.org | 2025-06-12 | 44.210.185.147 |
| exhibitionfloor.himss.org | 2024-12-22 | 18.213.41.67 |
| apps.himss.org | 2025-04-24 | 100.24.131.201 |
| test.himss.org | 2025-06-11 | 104.18.22.207 |
| www.himss.org | 2025-06-11 | 104.18.23.207 |
| legacy.himss.org | 2024-11-25 | 44.194.51.224 |