| Date | IP Address |
| 2025-02-25 | 63.140.36.145 (ClassC) |
| 2025-03-04 | 63.140.37.244 (ClassC) |
| 2025-03-29 | 63.140.37.126 (ClassC) |
| 2025-08-04 | 63.140.36.165 (ClassC) |
| 2025-10-18 | 63.140.37.142 (ClassC) |
| 2025-12-22 | 63.140.36.26 (ClassC) |
| 2026-02-21 | 63.140.36.131 (ClassC) |
| Date | Domain | IP |
| mig.3cat.cat | 2025-05-19 | 3.125.189.213 |
| img.3cat.cat | 2024-05-21 | 143.244.35.226 |
| api.3cat.cat | 2025-11-10 | 138.199.8.193 |
| registre-usuari.3cat.cat | 2025-05-14 | 13.107.246.70 |
| dinamics.3cat.cat | 2026-02-20 | 79.127.221.137 |
| smetrics.3cat.cat | 2025-02-25 | 63.140.36.145 |
| statics.3cat.cat | 2024-06-07 | 143.244.35.226 |
| ptcpns.3cat.cat | 2025-02-25 | 51.77.37.192 |
| www.3cat.cat | 2024-05-21 | 143.244.35.226 |