| Date | IP Address |
| 2021-05-17 | 59.36.203.41 (ClassC) |
| 2021-05-18 | 121.227.7.41 (ClassC) |
| 2021-06-16 | 182.201.240.41 (ClassC) |
| 2021-07-22 | 117.91.181.41 (ClassC) |
| 2021-07-22 | 121.32.228.41 (ClassC) |
| 2021-12-27 | 124.236.20.134 (ClassC) |
| 2022-06-22 | 219.151.141.222 (ClassC) |
| 2023-08-16 | 112.90.43.216 (ClassC) |
| 2023-08-18 | 222.75.5.191 (ClassC) |
| 2025-06-20 | 182.242.219.7 (ClassC) |
| 2026-01-25 | 182.242.219.8 (ClassC) |
| Date | Domain | IP |
| pic.51ifonts.com | 2025-06-20 | 182.242.219.8 |
| download.51ifonts.com | 2025-05-30 | 122.228.207.55 |
| api.51ifonts.com | 2025-09-28 | 47.103.163.163 |
| renderer.51ifonts.com | 2025-11-22 | 111.174.12.113 |
| js.51ifonts.com | 2025-08-04 | 42.225.101.116 |
| oss.51ifonts.com | 2025-06-20 | 182.242.219.7 |
| www.51ifonts.com | 2025-09-21 | 106.14.97.37 |