| Date | IP Address |
| 2020-12-11 | 199.27.79.133 (ClassC) |
| 2025-07-20 | 171.67.229.81 (ClassC) |
| Date | Domain | IP |
| smtp1.humdrum.org | 2025-05-10 | 171.67.229.81 |
| www1.humdrum.org | 2025-07-05 | 171.67.229.81 |
| mail2.humdrum.org | 2025-04-21 | 171.67.229.81 |
| imap2.humdrum.org | 2024-10-21 | 171.67.229.81 |
| smtp2.humdrum.org | 2025-04-21 | 171.67.229.81 |
| pop3.humdrum.org | 2025-05-08 | 171.67.229.81 |
| extra.humdrum.org | 2025-04-29 | 171.67.229.81 |
| poczta.humdrum.org | 2025-05-10 | 171.67.229.81 |
| exchange.humdrum.org | 2025-04-24 | 171.67.229.81 |
| secure.humdrum.org | 2024-12-27 | 171.67.229.81 |
| auth.humdrum.org | 2024-10-12 | 171.67.229.81 |
| smtpauth.humdrum.org | 2025-05-07 | 171.67.229.81 |
| mailin.humdrum.org | 2024-07-01 | 171.67.229.81 |
| min.humdrum.org | 2025-04-30 | 171.67.229.81 |
| imap.humdrum.org | 2025-05-15 | 171.67.229.81 |
| pop.humdrum.org | 2025-05-02 | 171.67.229.81 |
| mailer.humdrum.org | 2024-08-24 | 171.67.229.81 |
| postmaster.humdrum.org | 2024-09-09 | 171.67.229.81 |
| post.humdrum.org | 2025-07-05 | 171.67.229.81 |
| out.humdrum.org | 2024-09-09 | 171.67.229.81 |
| www.humdrum.org | 2024-09-06 | 185.199.110.153 |
| mailx.humdrum.org | 2025-07-05 | 171.67.229.81 |
| mx.humdrum.org | 2025-04-22 | 171.67.229.81 |
| relay.humdrum.org | 2025-07-20 | 171.67.229.81 |