| Date | IP Address |
| 2023-08-27 | 18.185.34.161 (ClassC) |
| 2023-11-01 | 3.66.205.196 (ClassC) |
| 2023-11-11 | 18.159.46.54 (ClassC) |
| 2023-11-16 | 52.57.29.61 (ClassC) |
| 2024-06-29 | 3.160.231.50 (ClassC) |
| 2024-09-02 | 18.67.240.22 (ClassC) |
| 2024-09-09 | 18.67.240.28 (ClassC) |
| 2024-09-17 | 18.67.240.4 (ClassC) |
| 2024-11-24 | 18.172.213.76 (ClassC) |
| 2025-02-11 | 13.224.115.89 (ClassC) |
| 2025-02-24 | 13.224.115.104 (ClassC) |
| 2025-02-28 | 13.224.115.29 (ClassC) |
| 2025-03-24 | 13.224.115.91 (ClassC) |
| 2025-05-09 | 18.67.240.102 (ClassC) |
| 2025-08-20 | 18.67.250.119 (ClassC) |
| 2026-02-19 | 99.84.9.40 (ClassC) |
| 2026-03-01 | 99.84.9.113 (ClassC) |
| Date | Domain | IP |
| mail.cerem.es | 2025-05-24 | 37.187.211.172 |
| alumnos.cerem.es | 2024-12-29 | 3.76.160.167 |
| www.cerem.es | 2023-11-01 | 3.66.205.196 |