| Date | IP Address |
| 2024-04-23 | 104.26.6.219 (ClassC) |
| 2024-08-02 | 104.26.7.219 (ClassC) |
| 2025-05-10 | 23.20.179.164 (ClassC) |
| 2025-08-10 | 54.158.195.16 (ClassC) |
| Date | Domain | IP |
| api.outlookbusiness.com | 2024-08-01 | 104.26.6.219 |
| www.outlookbusiness.com | 2024-05-29 | 172.67.72.146 |