| Date | IP Address |
| 2024-07-22 | 75.101.155.94 (ClassC) |
| 2024-09-07 | 3.225.182.217 (ClassC) |
| 2025-01-18 | 174.129.222.78 (ClassC) |
| 2025-04-30 | 3.82.177.31 (ClassC) |
| 2025-06-13 | 3.222.204.133 (ClassC) |
| 2025-08-14 | 23.22.216.79 (ClassC) |
| 2025-08-26 | 18.232.235.211 (ClassC) |
| 2025-09-08 | 54.209.32.87 (ClassC) |
| 2025-11-08 | 44.221.92.189 (ClassC) |
| 2026-01-14 | 54.156.155.54 (ClassC) |
| Date | Domain | IP |
| elsevierbookweb2.proofcentral.com | 2024-11-24 | 34.193.76.77 |
| elsevierapi.proofcentral.com | 2024-07-22 | 75.101.155.94 |
| elsevier.proofcentral.com | 2024-05-14 | 3.211.55.10 |
| degruyter.proofcentral.com | 2025-10-31 | 44.237.166.91 |
| www.proofcentral.com | 2025-05-06 | 208.80.122.216 |