| Date | IP Address |
| 2023-11-01 | 5.172.153.88 (ClassC) |
| 2025-01-06 | 172.67.71.225 (ClassC) |
| 2025-02-09 | 104.26.8.250 (ClassC) |
| 2025-05-23 | 104.22.54.149 (ClassC) |
| 2025-08-23 | 104.20.42.105 (ClassC) |
| 2026-01-17 | 172.66.167.159 (ClassC) |
| Date | Domain | IP |
| invigilators.nebosh.org.uk | 2020-12-29 | 108.128.138.37 |
| www.nebosh.org.uk | 2023-11-01 | 5.172.153.88 |