| Date | IP Address |
| 2018-06-27 | 67.231.157.90 (ClassC) |
| 2025-11-28 | 67.231.149.94 (ClassC) |
| Date | Domain | IP |
| owa.team.neustar | 2025-05-11 | 52.234.163.228 |
| mail.team.neustar | 2025-05-15 | 52.234.163.228 |
| securemail.team.neustar | 2025-11-28 | 67.231.149.94 |
| mrsmail.team.neustar | 2025-11-23 | 156.154.42.232 |
| autodiscover.team.neustar | 2025-05-12 | 52.234.163.228 |
| azmrs.team.neustar | 2025-05-11 | 52.234.163.228 |