| Date | IP Address |
| 2026-02-02 | 116.203.3.100 (ClassC) |
| Date | Domain | IP |
| mx20.stuenn.net | 2025-09-26 | 116.203.3.100 |
| webmail.stuenn.net | 2026-02-02 | 116.203.3.100 |
| mailin.stuenn.net | 2025-09-27 | 116.203.3.100 |
| smtpseguro.stuenn.net | 2025-09-25 | 116.203.3.100 |
| mailrelay.stuenn.net | 2025-09-25 | 116.203.3.100 |