| Date | IP Address |
| 2021-03-01 | 205.186.183.187 (ClassC) |
| 2026-01-21 | 72.167.59.179 (ClassC) |
| Date | Domain | IP |
| mail1.designduo.com | 2026-01-21 | 72.167.59.179 |
| mail02.designduo.com | 2025-04-15 | 72.167.59.179 |
| mail12.designduo.com | 2025-09-03 | 72.167.59.179 |
| mail2.designduo.com | 2025-05-08 | 72.167.59.179 |
| imap2.designduo.com | 2025-10-12 | 72.167.59.179 |
| mail3.designduo.com | 2025-04-17 | 72.167.59.179 |
| mail4.designduo.com | 2025-07-06 | 72.167.59.179 |
| mail5.designduo.com | 2025-07-30 | 72.167.59.179 |
| exchange.designduo.com | 2025-05-08 | 72.167.59.179 |
| comune.designduo.com | 2026-01-21 | 72.167.59.179 |
| mail.comune.designduo.com | 2026-01-16 | 72.167.59.179 |
| auth.designduo.com | 2026-01-21 | 72.167.59.179 |
| email.designduo.com | 2025-09-18 | 15.197.155.180 |
| mailin.designduo.com | 2026-01-21 | 72.167.59.179 |
| ftp.designduo.com | 2025-07-31 | 72.167.59.179 |
| authsmtp.designduo.com | 2025-10-06 | 72.167.59.179 |
| mailer.designduo.com | 2025-07-11 | 72.167.59.179 |
| mailhost.designduo.com | 2025-05-08 | 72.167.59.179 |
| mailgw.designduo.com | 2025-04-19 | 72.167.59.179 |
| mailrelay.designduo.com | 2025-11-14 | 72.167.59.179 |