| Date | IP Address |
| 2025-08-12 | 18.160.41.122 (ClassC) |
| 2025-08-12 | 18.160.41.61 (ClassC) |
| 2025-11-03 | 3.175.34.52 (ClassC) |
| Date | Domain | IP |
| image.email.merck-animal-health-usa.com | 2015-04-03 | 63.236.253.96 |
| click.email.merck-animal-health-usa.com | 2025-10-09 | 13.111.148.131 |
| view.email.merck-animal-health-usa.com | 2025-06-22 | 13.111.149.131 |
| distribution.merck-animal-health-usa.com | 2024-08-07 | 18.161.6.54 |
| image.emailco.merck-animal-health-usa.com | 2025-02-05 | 23.200.231.170 |
| eshop.merck-animal-health-usa.com | 2025-06-10 | 45.60.121.74 |
| connectlfw.merck-animal-health-usa.com | 2025-11-03 | 3.175.34.52 |
| www.merck-animal-health-usa.com | 2025-08-02 | 192.0.66.103 |