| Property | Value |
| Name | Digital Knowledge Co.,Ltd |
| Organization | Digital Knowledge Co.,Ltd |
| server-admin@d-k.jp | |
| Zip Code | 110-0005 |
| Phone | 03-5846-2131 |
| Fax | 03-5846-2132 |
| NameServer | ns02.pitserv.jp |
| Created | 2001-05-17 00:00:00 |
| Changed | 2019-05-31 19:52:02 |
| Expires | 2020-05-31 00:00:00 |
| Date | IP Address |
| 2018-08-14 | 67.135.105.153 (ClassC) |
| 2024-07-01 | 23.213.34.186 (ClassC) |
| 2024-07-23 | 23.216.147.78 (ClassC) |
| 2024-11-02 | 23.216.147.61 (ClassC) |
| 2024-11-06 | 23.44.175.73 (ClassC) |
| Date | Domain | IP |
| human-a.vp-pd.study.jp | 2024-06-25 | 23.44.205.227 |
| nkel.vp-pd.study.jp | 2024-10-28 | 23.216.147.58 |
| cblm.vp-pd.study.jp | 2019-09-25 | 23.59.190.123 |
| resas.vp-pd.study.jp | 2024-11-06 | 23.216.147.78 |