| Date | IP Address |
| 2019-03-31 | 13.33.140.97 (ClassC) |
| 2019-03-31 | 13.33.140.138 (ClassC) |
| 2019-03-31 | 13.33.140.91 (ClassC) |
| 2019-03-31 | 13.33.140.95 (ClassC) |
| 2019-04-21 | 13.249.87.78 (ClassC) |
| 2019-04-21 | 13.249.87.84 (ClassC) |
| 2019-04-21 | 13.249.87.100 (ClassC) |
| 2019-04-21 | 13.249.87.123 (ClassC) |
| 2021-09-08 | 13.249.135.41 (ClassC) |
| 2021-09-08 | 13.249.135.94 (ClassC) |
| 2025-02-04 | 172.67.178.72 (ClassC) |
| Date | Domain | IP |
| 2020.angstromctf.com | 2024-06-25 | 172.67.178.72 |
| 2021.angstromctf.com | 2024-09-30 | 172.67.178.72 |
| 2017.angstromctf.com | 2025-02-04 | 172.67.178.72 |
| 2018.angstromctf.com | 2024-10-30 | 172.67.178.72 |
| 2019.angstromctf.com | 2024-11-15 | 104.21.31.164 |