| Date | IP Address |
| 2019-05-03 | 13.124.20.211 (ClassC) |
| 2019-05-03 | 52.78.44.40 (ClassC) |
| 2019-08-12 | 52.79.90.231 (ClassC) |
| 2019-08-12 | 13.125.81.181 (ClassC) |
| 2019-09-03 | 52.79.108.77 (ClassC) |
| 2019-09-03 | 13.209.136.79 (ClassC) |
| 2024-09-15 | 3.163.24.58 (ClassC) |
| 2024-10-27 | 3.163.24.107 (ClassC) |
| 2024-11-28 | 3.163.158.27 (ClassC) |
| 2024-12-28 | 3.163.24.42 (ClassC) |
| 2025-01-11 | 3.165.160.33 (ClassC) |
| Date | Domain | IP |
| antispam.atcbc.co.kr | 2024-04-11 | 3.163.24.42 |
| authsmtp.atcbc.co.kr | 2021-07-24 | 99.84.64.96 |
| www.atcbc.co.kr | 2024-02-13 | 3.163.24.107 |
| a.mx.atcbc.co.kr | 2024-07-07 | 3.163.24.58 |