| Date | IP Address |
| 2013-05-08 | 199.173.155.8 (ClassC) |
| 2024-05-02 | 152.180.40.100 (ClassC) |
| 2024-06-11 | 172.65.90.26 (ClassC) |
| 2024-06-22 | 172.65.90.25 (ClassC) |
| 2024-07-13 | 172.65.90.27 (ClassC) |
| 2024-08-02 | 172.65.90.24 (ClassC) |
| 2024-11-04 | 104.18.21.78 (ClassC) |
| 2024-11-11 | 104.18.20.78 (ClassC) |
| 2025-01-30 | 104.22.40.191 (ClassC) |
| 2025-02-02 | 172.67.23.36 (ClassC) |
| 2025-03-15 | 104.22.41.191 (ClassC) |
| Date | Domain | IP |
| mail.ntsb.gov | 2014-05-30 | 199.173.155.20 |
| login.ntsb.gov | 2024-06-11 | 172.65.90.24 |
| www.ntsb.gov | 2024-11-04 | 104.18.20.78 |