| Date | IP Address |
| 2022-05-25 | 52.85.151.78 (ClassC) |
| 2024-03-23 | 18.160.46.107 (ClassC) |
| 2024-12-25 | 52.84.162.121 (ClassC) |
| 2025-03-23 | 3.163.24.41 (ClassC) |
| 2025-06-07 | 3.163.24.51 (ClassC) |
| 2025-08-28 | 99.84.66.28 (ClassC) |
| 2026-02-23 | 3.163.24.105 (ClassC) |
| Date | Domain | IP |
| mfcmapp1.hdel.co.kr | 2024-12-25 | 52.84.162.121 |
| owa.hdel.co.kr | 2025-09-07 | 20.214.206.132 |
| hai-api.hdel.co.kr | 2025-05-14 | 20.249.189.35 |
| outlook.hdel.co.kr | 2025-11-20 | 20.214.206.132 |
| digital.hdel.co.kr | 2025-05-25 | 211.183.67.235 |
| login.hdel.co.kr | 2025-11-01 | 20.214.206.132 |
| sip.hdel.co.kr | 2025-05-16 | 20.47.90.131 |
| mfcmapp.hdel.co.kr | 2024-09-11 | 18.161.6.116 |
| autodiscover.hdel.co.kr | 2021-02-22 | 203.242.40.101 |
| www.hdel.co.kr | 2025-08-22 | 210.207.246.253 |