| Date | IP Address |
| 2023-11-01 | 3.73.90.154 (ClassC) |
| 2025-04-14 | 99.84.66.88 (ClassC) |
| 2026-01-13 | 3.169.173.11 (ClassC) |
| 2026-01-18 | 3.169.173.36 (ClassC) |
| Date | Domain | IP |
| id.prontopro.de | 2025-10-06 | 3.65.172.48 |
| customer.prontopro.de | 2024-12-27 | 204.246.191.26 |
| assets.prontopro.de | 2024-01-17 | 99.84.66.59 |
| www.prontopro.de | 2023-11-01 | 3.73.90.154 |