| Date | IP Address |
| 2021-01-10 | 129.121.17.214 (ClassC) |
| 2025-09-24 | 66.235.200.24 (ClassC) |
| 2025-12-02 | 52.223.13.41 (ClassC) |
| Date | Domain | IP |
| mx10.impress-corp.com | 2025-06-08 | 66.235.200.24 |
| mx0.impress-corp.com | 2025-09-18 | 66.235.200.24 |
| mail01.impress-corp.com | 2025-07-30 | 66.235.200.24 |
| mx1.impress-corp.com | 2025-08-17 | 66.235.200.24 |
| mx2.impress-corp.com | 2025-07-22 | 66.235.200.24 |
| mail3.impress-corp.com | 2025-09-14 | 66.235.200.24 |
| mx3.impress-corp.com | 2025-09-23 | 66.235.200.24 |
| mail4.impress-corp.com | 2025-06-29 | 66.235.200.24 |
| mail5.impress-corp.com | 2025-07-29 | 66.235.200.24 |
| mail6.impress-corp.com | 2025-08-02 | 66.235.200.24 |
| mail9.impress-corp.com | 2025-06-11 | 66.235.200.24 |
| mta.impress-corp.com | 2025-07-22 | 66.235.200.24 |
| exchange.impress-corp.com | 2025-08-03 | 66.235.200.24 |
| mailgate.impress-corp.com | 2025-09-23 | 66.235.200.24 |
| m.impress-corp.com | 2025-04-24 | 66.235.200.24 |
| mailin.impress-corp.com | 2025-09-29 | 66.235.200.24 |
| correo.impress-corp.com | 2025-07-09 | 66.235.200.24 |
| hermes.impress-corp.com | 2025-09-24 | 66.235.200.24 |
| mailhost.impress-corp.com | 2025-09-18 | 66.235.200.24 |
| mx.impress-corp.com | 2024-11-27 | 66.96.142.50 |
| mailbox.impress-corp.com | 2025-08-22 | 66.235.200.24 |
| gateway.impress-corp.com | 2025-09-22 | 66.235.200.24 |