| Date | IP Address |
| 2018-01-25 | 52.7.82.142 (ClassC) |
| 2024-11-07 | 72.52.179.174 (ClassC) |
| 2026-01-07 | 172.233.219.123 (ClassC) |
| Date | Domain | IP |
| mail1.hoyf.com | 2025-04-12 | 72.52.179.174 |
| direct.hoyf.com | 2025-08-10 | 72.52.179.174 |
| www.hoyf.com | 2025-05-06 | 72.52.179.174 |