| Date | IP Address |
| 2023-08-27 | 54.248.210.244 (ClassC) |
| 2023-10-13 | 54.168.64.63 (ClassC) |
| 2023-10-24 | 3.113.94.175 (ClassC) |
| 2023-10-30 | 52.192.28.52 (ClassC) |
| 2023-11-16 | 13.115.27.122 (ClassC) |
| 2023-11-24 | 54.65.224.228 (ClassC) |
| 2023-12-23 | 54.92.10.108 (ClassC) |
| 2024-01-11 | 13.113.135.246 (ClassC) |
| 2024-03-26 | 35.77.232.95 (ClassC) |
| 2024-05-10 | 54.168.27.61 (ClassC) |
| 2024-05-18 | 18.177.67.104 (ClassC) |
| 2024-06-15 | 57.180.118.86 (ClassC) |
| 2024-06-24 | 52.194.21.42 (ClassC) |
| 2024-07-24 | 35.74.145.211 (ClassC) |
| 2024-08-10 | 18.178.35.108 (ClassC) |
| 2024-08-20 | 54.150.74.110 (ClassC) |
| 2024-08-23 | 54.92.103.224 (ClassC) |
| 2024-08-31 | 35.75.75.245 (ClassC) |
| 2024-09-22 | 57.181.94.122 (ClassC) |
| 2024-10-02 | 57.180.124.102 (ClassC) |
| 2024-10-09 | 46.51.246.47 (ClassC) |
| 2024-10-20 | 35.75.179.197 (ClassC) |
| 2024-11-11 | 54.248.201.213 (ClassC) |
| 2024-11-21 | 35.79.30.137 (ClassC) |
| 2024-11-24 | 57.182.119.82 (ClassC) |
| 2024-12-09 | 18.182.116.164 (ClassC) |
| 2024-12-20 | 35.73.249.229 (ClassC) |
| 2024-12-30 | 43.206.45.139 (ClassC) |
| 2025-01-07 | 52.197.43.70 (ClassC) |
| Date | Domain | IP |
| static.pen-online.jp | 2024-07-07 | 52.219.163.103 |
| image.pen-online.jp | 2023-11-24 | 52.219.162.173 |
| special.pen-online.jp | 2024-06-29 | 204.246.191.97 |
| admin.pen-online.jp | 2024-11-24 | 3.112.155.63 |
| statics.pen-online.jp | 2024-02-19 | 52.219.12.53 |
| stage.statics.pen-online.jp | 2024-08-20 | 52.219.16.233 |
| www.pen-online.jp | 2023-11-01 | 54.92.43.225 |