| Date | IP Address |
| 2020-12-20 | 129.121.17.214 (ClassC) |
| 2025-04-30 | 66.235.200.24 (ClassC) |
| Date | Domain | IP |
| mx10.impress-corp.com | 2025-04-26 | 66.235.200.24 |
| mx0.impress-corp.com | 2025-01-13 | 66.235.200.24 |
| mail01.impress-corp.com | 2024-11-16 | 66.235.200.24 |
| mx1.impress-corp.com | 2025-04-29 | 66.235.200.24 |
| mx2.impress-corp.com | 2025-04-30 | 66.235.200.24 |
| mail3.impress-corp.com | 2025-01-06 | 66.235.200.24 |
| mx3.impress-corp.com | 2025-04-25 | 66.235.200.24 |
| mail4.impress-corp.com | 2025-04-24 | 66.235.200.24 |
| mail5.impress-corp.com | 2025-02-16 | 66.235.200.24 |
| mail6.impress-corp.com | 2025-02-05 | 66.235.200.24 |
| mail9.impress-corp.com | 2025-03-22 | 66.235.200.24 |
| mta.impress-corp.com | 2024-11-17 | 66.235.200.24 |
| mailgate.impress-corp.com | 2025-04-25 | 66.235.200.24 |
| m.impress-corp.com | 2025-04-24 | 66.235.200.24 |
| mailin.impress-corp.com | 2025-04-25 | 66.235.200.24 |
| correo.impress-corp.com | 2025-04-26 | 66.235.200.24 |
| hermes.impress-corp.com | 2025-03-19 | 66.235.200.24 |
| mailhost.impress-corp.com | 2025-03-02 | 66.235.200.24 |
| mx.impress-corp.com | 2024-11-27 | 66.96.142.50 |
| mailbox.impress-corp.com | 2024-12-26 | 66.235.200.24 |
| gateway.impress-corp.com | 2025-03-23 | 66.235.200.24 |