| Date | IP Address |
| 2018-12-01 | 13.32.243.138 (ClassC) |
| 2018-12-01 | 13.32.243.159 (ClassC) |
| 2019-05-06 | 99.84.127.80 (ClassC) |
| 2019-08-24 | 54.192.89.119 (ClassC) |
| 2019-11-12 | 13.225.62.35 (ClassC) |
| 2019-12-04 | 13.225.212.27 (ClassC) |
| 2020-02-24 | 13.33.255.129 (ClassC) |
| 2020-03-20 | 99.86.86.10 (ClassC) |
| 2020-04-01 | 52.85.89.20 (ClassC) |
| 2020-04-05 | 13.225.217.60 (ClassC) |
| 2020-07-29 | 143.204.89.100 (ClassC) |
| 2020-10-21 | 13.227.75.70 (ClassC) |
| 2020-11-07 | 13.227.170.40 (ClassC) |
| 2020-11-27 | 13.225.25.74 (ClassC) |
| 2020-12-03 | 13.225.25.45 (ClassC) |
| 2020-12-27 | 65.8.68.93 (ClassC) |
| 2021-06-23 | 52.85.61.55 (ClassC) |
| 2021-06-23 | 52.85.61.74 (ClassC) |
| 2022-04-18 | 13.227.246.13 (ClassC) |
| 2024-12-11 | 152.195.19.97 (ClassC) |
| 2025-07-12 | 13.107.253.70 (ClassC) |
| 2025-08-27 | 13.107.246.70 (ClassC) |
| Date | Domain | IP |
| registration.grand-seiko.com | 2024-05-13 | 52.192.17.160 |
| www.grand-seiko.com | 2024-12-11 | 152.195.19.97 |