| Date | IP Address |
| 2019-02-01 | 52.71.148.226 (ClassC) |
| 2020-05-19 | 54.174.32.47 (ClassC) |
| 2020-05-19 | 3.209.194.10 (ClassC) |
| 2020-06-06 | 52.205.52.25 (ClassC) |
| 2020-08-19 | 3.215.143.33 (ClassC) |
| 2021-07-15 | 18.210.198.119 (ClassC) |
| 2026-02-14 | 172.66.0.145 (ClassC) |
| Date | Domain | IP |
| certs.cxc.org | 2024-07-28 | 185.199.108.153 |
| support.cxc.org | 2026-01-07 | 162.159.140.147 |
| emarking.support.cxc.org | 2026-02-14 | 172.66.0.145 |
| exams.support.cxc.org | 2026-01-24 | 172.66.0.145 |
| hubsupport.cxc.org | 2025-11-18 | 172.66.0.145 |