| Date | IP Address |
| 2018-12-09 | 23.66.222.12 (ClassC) |
| 2023-07-06 | 104.86.239.243 (ClassC) |
| 2023-08-25 | 23.195.223.102 (ClassC) |
| 2024-02-10 | 23.48.181.214 (ClassC) |
| 2024-03-30 | 23.52.146.52 (ClassC) |
| 2024-04-12 | 23.192.31.113 (ClassC) |
| 2024-05-02 | 104.119.91.105 (ClassC) |
| 2024-10-02 | 23.201.191.164 (ClassC) |
| 2024-11-25 | 23.64.169.169 (ClassC) |
| 2024-12-12 | 23.203.230.246 (ClassC) |
| 2025-04-29 | 184.84.195.56 (ClassC) |
| 2025-09-05 | 184.24.207.45 (ClassC) |
| 2025-09-10 | 23.198.173.41 (ClassC) |
| 2025-10-18 | 2.19.143.109 (ClassC) |
| 2026-02-18 | 104.100.48.174 (ClassC) |
| Date | Domain | IP |
| citadel.ncsc.gov | 2026-02-14 | 23.192.230.145 |
| www.ncsc.gov | 2023-08-25 | 104.86.239.243 |