| Date | IP Address |
| 2014-08-06 | 54.243.198.214 (ClassC) |
| 2025-01-02 | 40.65.211.62 (ClassC) |
| 2025-05-10 | 162.159.140.142 (ClassC) |
| 2026-02-01 | 172.66.0.140 (ClassC) |
| Date | Domain | IP |
| cloudmail.ust.com | 2024-04-23 | 52.96.121.50 |
| autodiscover.ust.com | 2025-12-22 | 203.99.40.203 |
| analytics.ust.com | 2025-08-15 | 63.140.36.131 |
| isautomations.ust.com | 2025-06-26 | 13.71.124.218 |
| mygroups.ust.com | 2024-04-14 | 20.219.28.84 |
| www.ust.com | 2024-05-21 | 152.195.19.97 |