| Date | IP Address |
| 2014-06-23 | 202.32.173.84 (ClassC) |
| 2024-04-14 | 104.18.33.14 (ClassC) |
| 2024-07-11 | 172.64.154.242 (ClassC) |
| 2024-07-27 | 104.18.2.158 (ClassC) |
| 2024-08-08 | 104.18.3.158 (ClassC) |
| 2024-11-25 | 172.64.144.15 (ClassC) |
| 2025-01-05 | 104.18.43.241 (ClassC) |
| Date | Domain | IP |
| www.animalhealth.pfizer.co.jp | 2015-06-19 | 54.230.101.114 |
| ghw.pfizer.co.jp | 2024-06-30 | 104.18.33.14 |
| www.pfizer.co.jp | 2024-04-23 | 172.64.154.242 |