| Date | IP Address |
| 2018-07-31 | 52.85.101.190 (ClassC) |
| 2018-07-31 | 52.85.101.23 (ClassC) |
| 2024-08-21 | 18.161.6.79 (ClassC) |
| 2024-12-08 | 99.86.38.122 (ClassC) |
| 2025-05-01 | 18.161.6.124 (ClassC) |
| 2025-05-07 | 18.161.6.102 (ClassC) |
| 2025-08-07 | 18.161.6.75 (ClassC) |
| Date | Domain | IP |
| s2.onmycalendar.com | 2014-03-14 | 176.32.100.193 |
| autodiscover.onmycalendar.com | 2025-02-07 | 50.17.55.117 |
| s2dev.onmycalendar.com | 2024-08-21 | 18.161.6.79 |