| Date | IP Address |
| 2023-05-25 | 18.178.222.93 (ClassC) |
| 2023-09-19 | 13.230.193.218 (ClassC) |
| 2024-06-18 | 13.115.218.118 (ClassC) |
| 2025-06-02 | 35.73.191.105 (ClassC) |
| 2025-08-02 | 52.69.167.233 (ClassC) |
| 2025-08-18 | 54.150.38.211 (ClassC) |
| 2026-01-16 | 43.207.19.129 (ClassC) |
| 2026-02-17 | 54.178.247.53 (ClassC) |
| Date | Domain | IP |
| dev-spa.sendenkaigi.com | 2025-10-31 | 3.169.173.31 |
| id.sendenkaigi.com | 2024-10-04 | 52.198.1.160 |
| lp.sendenkaigi.com | 2025-03-09 | 204.246.191.68 |
| news.sendenkaigi.com | 2025-09-30 | 35.75.236.81 |
| ent.sendenkaigi.com | 2025-06-02 | 35.73.191.105 |
| www.sendenkaigi.com | 2023-11-01 | 18.176.17.156 |