| Date | IP Address |
| 2014-11-19 | 66.114.124.140 (ClassC) |
| 2025-01-28 | 40.71.11.169 (ClassC) |
| 2025-02-23 | 104.43.221.31 (ClassC) |
| 2025-07-15 | 20.119.0.28 (ClassC) |
| 2026-01-24 | 40.112.243.53 (ClassC) |
| Date | Domain | IP |
| am-ehrc.teams.com | 2024-04-08 | 52.112.112.160 |
| em-ehrc.teams.com | 2024-01-31 | 52.112.191.12 |
| ap-ehrc.teams.com | 2024-01-31 | 52.113.103.4 |
| am-ehrc.ppe.teams.com | 2023-08-26 | 52.112.115.56 |
| em-ehrc.ppe.teams.com | 2024-01-31 | 52.112.191.8 |
| www.teams.com | 2024-12-14 | 104.43.221.31 |
| ehrc.canary.teams.com | 2024-01-31 | 52.112.115.14 |