| Property | Value |
| Organization | DHC Corporation |
| NameServer | ek-mail02.cobuy.jp |
| Created | 1996-05-17 00:00:00 |
| Changed | 2016-05-31 16:08:10 |
| Date | IP Address |
| 2014-01-10 | 66.235.139.210 (ClassC) |
| 2014-05-30 | 66.235.139.176 (ClassC) |
| 2014-08-16 | 66.235.138.197 (ClassC) |
| 2014-09-14 | 66.235.139.211 (ClassC) |
| 2014-10-30 | 66.235.138.198 (ClassC) |
| 2014-11-01 | 66.235.139.208 (ClassC) |
| 2015-01-16 | 66.235.139.1 (ClassC) |
| 2015-01-23 | 66.235.139.2 (ClassC) |
| 2018-07-12 | 172.82.210.16 (ClassC) |
| 2019-08-14 | 66.235.134.192 (ClassC) |
| 2024-10-01 | 63.140.36.145 (ClassC) |
| 2024-12-15 | 63.140.37.158 (ClassC) |
| 2025-01-13 | 63.140.37.126 (ClassC) |
| Date | Domain | IP |
| top.dhc.co.jp | 2024-09-04 | 202.79.240.200 |
| metrics.dhc.co.jp | 2014-10-30 | 66.235.138.198 |
| www.edu.dhc.co.jp | 2024-12-31 | 180.10.249.53 |
| www.dhc.co.jp | 2024-11-26 | 210.161.24.249 |