| Date | IP Address |
| 2023-08-25 | 104.71.213.88 (ClassC) |
| 2024-07-10 | 104.97.45.127 (ClassC) |
| 2024-11-25 | 23.218.184.186 (ClassC) |
| 2025-04-13 | 184.31.196.188 (ClassC) |
| 2025-06-28 | 104.71.212.198 (ClassC) |
| 2025-08-13 | 184.27.178.203 (ClassC) |
| Date | Domain | IP |
| image.mail.citibank.co.uk | 2024-11-24 | 23.44.175.156 |
| image.uat.mail.citibank.co.uk | 2023-08-25 | 104.71.213.88 |