| Date | IP Address |
| 2020-12-04 | 172.232.13.33 (ClassC) |
| 2023-04-17 | 184.51.157.202 (ClassC) |
| 2024-01-16 | 23.215.9.42 (ClassC) |
| 2024-09-10 | 23.46.17.12 (ClassC) |
| 2024-10-17 | 23.218.93.203 (ClassC) |
| 2024-12-23 | 23.46.228.171 (ClassC) |
| 2025-02-05 | 23.200.231.198 (ClassC) |
| 2025-04-22 | 23.46.228.166 (ClassC) |
| 2025-08-12 | 23.216.147.207 (ClassC) |
| 2026-02-21 | 23.216.147.198 (ClassC) |
| Date | Domain | IP |
| careers.ducommun.com | 2024-03-11 | 204.246.191.71 |
| investors.ducommun.com | 2024-09-10 | 23.46.17.12 |