| Date | IP Address |
| 2025-03-19 | 104.21.74.24 (ClassC) |
| 2026-01-20 | 172.67.153.110 (ClassC) |
| Date | Domain | IP |
| cpanel.sumeru.com | 2025-03-19 | 104.21.74.24 |
| cpcalendars.sumeru.com | 2025-05-07 | 172.67.153.110 |
| cpcontacts.sumeru.com | 2025-01-01 | 104.21.74.24 |
| www.sumeru.com | 2025-05-21 | 104.21.74.24 |