| Date | IP Address |
| 2024-12-28 | 149.111.148.141 (ClassC) |
| Date | Domain | IP |
| image.email.optumcare.com | 2024-09-17 | 23.196.151.190 |
| view.email.optumcare.com | 2024-12-27 | 13.111.149.57 |
| ar.optumcare.com | 2024-11-14 | 205.132.166.95 |
| professionals.optumcare.com | 2024-12-28 | 149.111.148.141 |
| www.optumcare.com | 2024-11-25 | 149.111.148.142 |