| Date | IP Address |
| 2021-11-23 | 99.86.186.74 (ClassC) |
| 2022-01-21 | 108.138.246.69 (ClassC) |
| 2024-07-26 | 99.84.66.123 (ClassC) |
| 2024-08-05 | 99.84.66.81 (ClassC) |
| 2024-10-21 | 104.26.5.72 (ClassC) |
| 2025-12-31 | 172.67.73.148 (ClassC) |
| 2026-01-07 | 104.26.4.72 (ClassC) |
| Date | Domain | IP |
| public.nihongomaster.com | 2025-12-27 | 172.67.73.148 |
| static.nihongomaster.com | 2024-07-26 | 99.84.66.123 |
| affiliates.nihongomaster.com | 2024-07-26 | 34.203.152.112 |
| mailassets.nihongomaster.com | 2025-12-27 | 104.26.5.72 |
| www.nihongomaster.com | 2023-08-29 | 52.87.47.55 |