| Date | IP Address |
| 2020-08-10 | 23.4.7.211 (ClassC) |
| 2020-10-03 | 23.7.106.222 (ClassC) |
| 2023-08-25 | 23.37.214.143 (ClassC) |
| 2024-03-07 | 23.196.195.112 (ClassC) |
| 2024-07-30 | 23.64.99.68 (ClassC) |
| 2024-08-09 | 23.5.8.183 (ClassC) |
| 2024-09-11 | 23.214.101.169 (ClassC) |
| 2024-11-25 | 23.196.155.28 (ClassC) |
| 2024-12-26 | 23.196.206.53 (ClassC) |
| 2025-03-26 | 69.192.92.230 (ClassC) |
| 2025-04-30 | 2.19.133.188 (ClassC) |
| 2025-07-10 | 23.37.214.92 (ClassC) |
| 2026-01-19 | 23.38.235.194 (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 | 2025-09-14 | 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 |