| Date | IP Address |
| 2020-08-24 | 23.223.197.137 (ClassC) |
| 2020-08-24 | 2.18.66.24 (ClassC) |
| 2020-08-24 | 23.223.197.146 (ClassC) |
| 2024-03-23 | 23.219.78.179 (ClassC) |
| 2024-06-30 | 23.216.147.26 (ClassC) |
| 2025-09-13 | 23.46.228.4 (ClassC) |
| 2025-10-14 | 23.46.228.6 (ClassC) |
| 2025-12-09 | 23.32.75.168 (ClassC) |
| 2026-01-04 | 23.206.171.42 (ClassC) |
| Date | Domain | IP |
| gate.sew-korea.co.kr | 2024-02-05 | 104.96.203.49 |
| auth.sew-korea.co.kr | 2024-07-27 | 23.213.175.48 |
| correo.sew-korea.co.kr | 2024-06-01 | 23.213.34.164 |
| imap.sew-korea.co.kr | 2024-02-18 | 23.216.147.136 |
| www.sew-korea.co.kr | 2024-03-23 | 23.219.78.179 |
| a.mx.sew-korea.co.kr | 2024-02-05 | 23.34.172.82 |