| Date | IP Address |
| 2013-11-21 | 193.130.68.227 (ClassC) |
| 2017-03-01 | 34.198.237.40 (ClassC) |
| 2018-05-09 | 54.209.5.66 (ClassC) |
| 2024-05-11 | 212.1.56.119 (ClassC) |
| 2025-12-10 | 212.1.56.122 (ClassC) |
| Date | Domain | IP |
| arbeitgeber.pro-physik.de | 2024-10-05 | 99.86.38.108 |
| www.pro-physik.de | 2024-05-11 | 212.1.56.119 |