| Date | IP Address |
| 2020-02-14 | 104.28.12.150 (ClassC) |
| 2025-01-26 | 104.26.1.105 (ClassC) |
| 2025-03-04 | 172.67.74.202 (ClassC) |
| 2025-04-21 | 104.26.0.105 (ClassC) |
| 2025-07-06 | 104.18.27.45 (ClassC) |
| 2026-01-06 | 104.18.26.45 (ClassC) |
| Date | Domain | IP |
| de.betzold-educational.com | 2025-03-05 | 104.26.1.105 |
| en.betzold-educational.com | 2025-05-22 | 104.26.1.105 |