| Date | IP Address |
| 2018-10-10 | 52.85.89.200 (ClassC) |
| 2018-10-10 | 52.85.89.224 (ClassC) |
| 2018-10-10 | 52.85.89.181 (ClassC) |
| 2024-02-19 | 99.84.66.69 (ClassC) |
| 2024-03-13 | 99.84.66.112 (ClassC) |
| 2024-06-26 | 3.163.24.115 (ClassC) |
| 2024-12-22 | 18.172.170.74 (ClassC) |
| 2025-04-14 | 99.84.66.14 (ClassC) |
| 2025-10-16 | 3.169.173.101 (ClassC) |
| Date | Domain | IP |
| ch-provisioning.relay.school | 2025-10-04 | 54.69.123.63 |
| api-auth.relay.school | 2024-08-05 | 18.161.6.17 |
| reporting-api.relay.school | 2025-05-05 | 54.202.96.38 |
| staging-relay-ms-graph-api.relay.school | 2024-03-09 | 204.246.191.120 |
| development-relay-ms-graph-api.relay.school | 2025-08-01 | 3.175.34.27 |
| british-school-in.portal.relay.school | 2024-08-20 | 18.161.6.14 |
| centerville-city.portal.relay.school | 2024-08-25 | 18.161.6.14 |
| classroom.relay.school | 2024-01-09 | 3.163.24.97 |
| staging-classroom.relay.school | 2024-02-19 | 99.84.66.69 |
| development-classroom.relay.school | 2024-12-04 | 52.84.162.118 |
| devices.classroom.relay.school | 2025-06-06 | 52.26.82.242 |
| relay-co-api-production.relay.school | 2025-04-08 | 44.240.139.247 |
| sso.relay.school | 2024-12-15 | 99.84.66.81 |
| devices.filter.relay.school | 2025-10-09 | 3.175.34.25 |
| analytics.relay.school | 2025-07-31 | 99.83.186.106 |
| staging-analytics.relay.school | 2025-03-27 | 75.2.43.150 |
| prototype-speed-test.relay.school | 2024-03-10 | 18.161.6.128 |