| Date | IP Address |
| 2024-04-13 | 35.172.125.181 (ClassC) |
| 2024-07-30 | 3.94.51.82 (ClassC) |
| 2024-12-26 | 44.217.128.152 (ClassC) |
| 2025-02-13 | 54.81.162.100 (ClassC) |
| 2025-05-05 | 23.20.22.251 (ClassC) |
| 2025-05-11 | 3.94.178.223 (ClassC) |
| 2025-06-03 | 3.225.173.8 (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 | 2025-06-02 | 192.0.2.2 |
| telehealthtest.ihs.gov | 2024-04-13 | 35.172.125.181 |
| www.ihs.gov | 2025-05-24 | 198.45.0.67 |