| Date | IP Address |
| 2024-09-21 | 23.209.30.19 (ClassC) |
| 2025-01-27 | 23.54.38.6 (ClassC) |
| 2025-03-27 | 23.202.201.5 (ClassC) |
| 2025-05-08 | 23.39.23.62 (ClassC) |
| Date | Domain | IP |
| image.email.costacruise.com | 2025-03-24 | 23.192.230.148 |
| click.email.costacruise.com | 2025-04-26 | 128.17.224.158 |
| smetrics.costacruise.com | 2023-08-04 | 63.140.36.14 |
| www.costacruise.com | 2024-09-21 | 23.209.30.19 |