| Date | IP Address |
| 2026-03-03 | 46.16.59.18 (ClassC) |
| Date | Domain | IP |
| mx10.4colors.es | 2025-07-12 | 46.16.59.18 |
| mx20.4colors.es | 2026-02-19 | 46.16.59.18 |
| server1.4colors.es | 2025-06-25 | 46.16.59.18 |
| mx2.4colors.es | 2025-09-23 | 46.16.59.18 |
| mail3.4colors.es | 2025-07-17 | 46.16.59.18 |
| mail5.4colors.es | 2026-02-19 | 46.16.59.18 |
| posta.4colors.es | 2026-02-19 | 46.16.59.18 |
| comune.4colors.es | 2026-02-19 | 46.16.59.18 |
| smtp.comune.4colors.es | 2026-02-19 | 46.16.59.18 |
| mail.4colors.es | 2025-08-31 | 46.16.59.18 |
| smtpseguro.4colors.es | 2025-06-27 | 46.16.59.18 |
| pop.4colors.es | 2025-06-25 | 46.16.59.18 |
| hostmaster.4colors.es | 2025-09-12 | 46.16.59.18 |
| mailhost.4colors.es | 2026-02-19 | 46.16.59.18 |
| mailsrv.4colors.es | 2025-06-29 | 46.16.59.18 |
| www.4colors.es | 2026-03-03 | 46.16.59.18 |