| Date | IP Address |
| 2024-05-30 | 3.5.138.73 (ClassC) |
| 2024-08-31 | 3.5.139.31 (ClassC) |
| 2024-10-25 | 52.219.170.86 (ClassC) |
| 2024-12-23 | 52.219.46.137 (ClassC) |
| 2025-06-20 | 3.5.139.150 (ClassC) |
| 2025-08-19 | 3.5.135.115 (ClassC) |
| 2026-01-12 | 52.219.140.57 (ClassC) |
| 2026-01-31 | 3.5.134.116 (ClassC) |
| 2026-02-08 | 52.219.140.28 (ClassC) |
| 2026-02-18 | 3.5.135.80 (ClassC) |
| Date | Domain | IP |
| styleguide.koelnmesse.net | 2024-09-20 | 18.161.6.52 |
| presskm.koelnmesse.net | 2024-03-15 | 3.163.24.58 |
| sso.tickets.koelnmesse.net | 2024-09-09 | 99.84.66.98 |
| www.koelnmesse.net | 2026-01-25 | 92.51.157.214 |
| my.koelnmesse.net | 2024-05-30 | 3.5.138.73 |