| Property | Value |
| Country | Japan |
| Domain | Date |
| chuoh.co.jp | 2025-01-02 |
| eccube42.customer.aquaselect.jp | 2025-01-02 |
| fapub.co.jp | 2024-12-31 |
| chuoh.com | 2024-12-30 |
| www.ckc.co.jp | 2024-12-30 |
| ktcschool-system.com | 2024-12-26 |
| meirin-net.co.jp | 2024-12-26 |
| ckc-net-study.com | 2024-12-24 |