| Date | IP Address |
| 2017-05-29 | 52.84.56.214 (ClassC) |
| 2017-09-07 | 13.33.141.103 (ClassC) |
| 2018-01-11 | 54.192.2.48 (ClassC) |
| 2020-05-06 | 52.85.151.85 (ClassC) |
| 2023-12-17 | 13.224.14.51 (ClassC) |
| 2024-09-23 | 18.161.6.98 (ClassC) |
| 2025-01-12 | 99.84.66.95 (ClassC) |
| 2025-02-04 | 99.86.38.113 (ClassC) |
| 2025-04-12 | 99.84.66.88 (ClassC) |
| 2025-05-23 | 99.86.38.105 (ClassC) |
| 2025-08-01 | 99.84.66.56 (ClassC) |
| 2025-08-11 | 99.84.66.115 (ClassC) |
| 2025-09-22 | 3.169.173.84 (ClassC) |
| 2026-02-14 | 3.169.173.110 (ClassC) |
| Date | Domain | IP |
| mail10.practico-irpf.es | 2024-12-15 | 99.86.38.3 |
| relay2.practico-irpf.es | 2024-10-01 | 18.161.6.50 |
| antispam.practico-irpf.es | 2024-06-15 | 99.84.66.56 |