| Date | IP Address |
| 2024-11-25 | 44.238.89.169 (ClassC) |
| 2025-02-05 | 52.35.73.108 (ClassC) |
| 2025-02-11 | 52.25.213.147 (ClassC) |
| 2025-05-05 | 35.155.228.231 (ClassC) |
| 2025-05-14 | 44.236.107.132 (ClassC) |
| 2025-05-17 | 52.39.214.25 (ClassC) |
| Date | Domain | IP |
| smtpxway2.ihs.gov | 2025-05-05 | 198.45.9.6 |
| telehealth.ihs.gov | 2024-11-25 | 44.238.89.169 |
| mail.ihs.gov | 2014-05-29 | 198.45.9.15 |
| wireless.ihs.gov | 2025-05-04 | 192.0.2.2 |
| telehealthtest.ihs.gov | 2024-04-13 | 35.172.125.181 |
| www.ihs.gov | 2025-05-05 | 198.45.0.67 |