| Date | IP Address |
| 2024-12-26 | 52.151.123.14 (ClassC) |
| Date | Domain | IP |
| eelboardcld01.eisai.net | 2024-11-30 | 172.167.221.252 |
| eisaiemeateamssbc1.eisai.net | 2024-12-07 | 185.181.144.37 |
| eisaimail1.eisai.net | 2024-12-03 | 62.73.153.171 |
| connect1.eisai.net | 2024-11-30 | 172.167.169.134 |
| eisaiemeateamssbc2.eisai.net | 2024-11-18 | 185.181.144.45 |
| connect2.eisai.net | 2024-11-18 | 62.73.153.174 |
| connect3.eisai.net | 2024-11-28 | 123.103.207.91 |
| connect5.eisai.net | 2024-12-04 | 20.58.114.118 |
| emeaeisaicmg.eisai.net | 2024-12-26 | 52.151.123.14 |
| exmail.eisai.net | 2024-12-03 | 37.244.100.22 |
| enterpriseregistration.eisai.net | 2024-12-05 | 20.190.154.141 |
| autodiscover.eisai.net | 2024-11-19 | 52.96.91.56 |
| careers.eisai.net | 2024-12-04 | 130.214.193.81 |
| sts.eisai.net | 2024-11-21 | 37.244.100.20 |
| enterpriseenrollment.eisai.net | 2024-12-04 | 20.189.172.161 |
| eisaisentry.eisai.net | 2024-11-19 | 37.244.100.23 |