| Date | IP Address |
| 2014-02-21 | 54.225.142.127 (ClassC) |
| 2018-03-26 | 52.21.1.126 (ClassC) |
| 2024-08-09 | 104.18.19.37 (ClassC) |
| 2025-12-03 | 172.64.153.235 (ClassC) |
| Date | Domain | IP |
| email.acec.org | 2024-01-09 | 52.84.162.39 |
| aashto.acec.org | 2025-07-04 | 104.18.34.21 |
| programs.acec.org | 2024-08-09 | 104.18.19.37 |
| www.acec.org | 2025-10-02 | 162.159.135.42 |
| community.acec.org | 2025-07-07 | 34.225.242.50 |