| Date | IP Address |
| 2018-07-17 | 185.16.44.4 (ClassC) |
| 2024-03-07 | 185.16.44.221 (ClassC) |
| 2024-04-07 | 208.91.197.132 (ClassC) |
| 2025-06-29 | 199.59.243.228 (ClassC) |
| 2026-02-24 | 13.248.169.48 (ClassC) |
| Date | Domain | IP |
| mail.udf.org | 2024-04-07 | 208.91.197.132 |
| webmail.udf.org | 2024-10-06 | 208.91.197.27 |
| smtp.udf.org | 2024-04-07 | 208.91.197.132 |
| mx.udf.org | 2024-03-07 | 185.16.44.221 |