| Date | IP Address |
| 2021-01-24 | 104.112.199.159 (ClassC) |
| 2023-08-25 | 23.196.119.128 (ClassC) |
| 2024-04-20 | 23.37.214.143 (ClassC) |
| 2024-06-01 | 184.24.149.240 (ClassC) |
| 2024-07-30 | 2.19.149.215 (ClassC) |
| 2024-11-24 | 23.196.155.28 (ClassC) |
| 2024-12-24 | 23.196.206.53 (ClassC) |
| 2025-01-23 | 69.192.95.148 (ClassC) |
| 2025-03-10 | 104.104.5.182 (ClassC) |
| 2025-03-17 | 23.6.188.195 (ClassC) |
| 2025-04-03 | 2.19.133.188 (ClassC) |
| Date | Domain | IP |
| staging.niem.gov | 2023-08-25 | 104.108.95.151 |
| edit-staging.niem.gov | 2023-08-25 | 104.108.95.151 |
| tools.niem.gov | 2025-03-24 | 130.207.211.174 |
| edit.niem.gov | 2023-08-25 | 23.196.202.110 |
| testint.niem.gov | 2023-08-25 | 104.108.95.151 |
| edit-testint.niem.gov | 2023-08-25 | 104.108.95.151 |
| preview.niem.gov | 2023-08-25 | 23.37.214.143 |
| edit-preview.niem.gov | 2023-08-25 | 23.196.196.228 |
| www.niem.gov | 2023-08-25 | 23.196.119.128 |