| Date | IP Address |
| 2021-10-01 | 104.18.31.224 (ClassC) |
| 2023-11-11 | 172.64.153.116 (ClassC) |
| 2023-12-04 | 104.18.34.140 (ClassC) |
| 2025-05-11 | 104.18.21.89 (ClassC) |
| 2025-08-09 | 104.18.20.89 (ClassC) |
| Date | Domain | IP |
| home.efax.ch | 2014-01-09 | 216.156.249.138 |
| www.efax.ch | 2025-01-17 | 104.18.21.89 |