| Date | IP Address |
| 2021-12-08 | 18.159.240.81 (ClassC) |
| 2022-11-02 | 3.66.251.197 (ClassC) |
| 2024-05-07 | 35.158.206.73 (ClassC) |
| 2024-11-24 | 18.192.163.139 (ClassC) |
| 2024-12-28 | 3.122.210.29 (ClassC) |
| 2025-01-07 | 3.64.182.233 (ClassC) |
| 2025-01-21 | 3.120.118.143 (ClassC) |
| 2025-03-02 | 18.197.249.188 (ClassC) |
| 2025-04-30 | 18.158.216.41 (ClassC) |
| 2025-05-23 | 18.159.169.184 (ClassC) |
| 2025-06-01 | 52.28.119.236 (ClassC) |
| 2025-07-13 | 3.126.107.169 (ClassC) |
| 2025-08-21 | 18.195.179.5 (ClassC) |
| 2025-09-19 | 3.122.126.72 (ClassC) |
| 2026-02-10 | 3.126.25.159 (ClassC) |
| Date | Domain | IP |
| ww3.efs-survey.com | 2024-11-24 | 18.192.163.139 |
| ww5.efs-survey.com | 2025-10-03 | 3.65.65.60 |
| sonova.efs-survey.com | 2025-11-23 | 195.66.99.102 |
| cc.efs-survey.com | 2025-08-06 | 195.66.99.102 |
| training.efs-survey.com | 2025-05-22 | 52.29.194.91 |
| opinion.efs-survey.com | 2025-12-05 | 195.66.99.102 |
| immonet.efs-survey.com | 2025-12-04 | 52.57.131.140 |
| www.efs-survey.com | 2023-11-01 | 52.28.42.228 |