| Date | IP Address |
| 2022-11-01 | 65.9.86.35 (ClassC) |
| 2022-12-09 | 18.160.181.79 (ClassC) |
| 2023-06-18 | 18.154.227.122 (ClassC) |
| 2023-06-18 | 18.154.227.62 (ClassC) |
| 2023-08-27 | 99.84.66.109 (ClassC) |
| 2023-08-30 | 18.161.135.86 (ClassC) |
| 2025-01-19 | 99.84.66.61 (ClassC) |
| 2025-07-01 | 99.84.66.23 (ClassC) |
| 2025-08-25 | 99.84.66.8 (ClassC) |
| 2025-09-13 | 3.169.173.119 (ClassC) |
| 2025-10-21 | 3.169.173.37 (ClassC) |
| 2026-02-11 | 3.169.173.123 (ClassC) |
| Date | Domain | IP |
| www.picoctf.org | 2024-10-15 | 99.84.66.23 |
| play.picoctf.org | 2025-09-24 | 172.66.157.191 |