| Date | IP Address |
| 2019-04-14 | 13.33.83.6 (ClassC) |
| 2019-04-22 | 13.249.142.66 (ClassC) |
| 2019-04-22 | 13.249.142.17 (ClassC) |
| 2019-04-22 | 13.249.142.55 (ClassC) |
| 2019-04-22 | 13.249.142.6 (ClassC) |
| 2019-04-24 | 13.249.87.3 (ClassC) |
| 2019-04-24 | 13.249.87.52 (ClassC) |
| 2019-04-24 | 13.249.87.73 (ClassC) |
| 2019-04-24 | 13.249.87.90 (ClassC) |
| 2020-03-18 | 13.227.44.103 (ClassC) |
| 2020-03-18 | 13.227.44.30 (ClassC) |
| 2020-11-05 | 13.226.15.108 (ClassC) |
| 2020-11-05 | 13.226.15.112 (ClassC) |
| 2020-11-05 | 13.226.15.46 (ClassC) |
| 2025-05-16 | 104.21.31.164 (ClassC) |
| 2025-12-05 | 172.67.178.72 (ClassC) |
| Date | Domain | IP |
| 2020.angstromctf.com | 2024-06-25 | 172.67.178.72 |
| 2021.angstromctf.com | 2025-04-15 | 104.21.31.164 |
| 2017.angstromctf.com | 2025-04-14 | 172.67.178.72 |
| 2018.angstromctf.com | 2025-01-26 | 104.21.31.164 |
| 2019.angstromctf.com | 2025-05-16 | 104.21.31.164 |