| Date | IP Address |
| 2015-11-05 | 23.56.86.146 (ClassC) |
| 2018-10-20 | 2.19.149.47 (ClassC) |
| 2019-12-26 | 23.51.192.254 (ClassC) |
| 2021-01-20 | 104.81.110.127 (ClassC) |
| 2021-01-22 | 23.204.12.49 (ClassC) |
| 2022-03-30 | 23.194.157.251 (ClassC) |
| 2022-06-01 | 184.86.204.53 (ClassC) |
| 2022-06-17 | 23.6.103.14 (ClassC) |
| 2023-08-25 | 23.37.217.29 (ClassC) |
| 2024-07-10 | 184.24.192.193 (ClassC) |
| 2024-07-25 | 2.19.136.141 (ClassC) |
| 2024-08-10 | 23.38.239.92 (ClassC) |
| 2025-06-30 | 23.37.217.25 (ClassC) |
| 2025-09-20 | 23.196.158.163 (ClassC) |
| 2026-01-16 | 23.49.132.116 (ClassC) |
| 2026-03-02 | 23.198.150.190 (ClassC) |
| Date | Domain | IP |
| www7.transportation.gov | 2020-12-25 | 104.107.197.75 |
| www.transportation.gov | 2023-08-25 | 23.37.217.29 |