| Property | Value |
| Address | 宏策系統顧問有限公司 Grand Strategy Systems Consultancy LTD. 10F., No. |
| NameServer | dns3.jcase.com.tw 220.128.184.98 |
| Created | 2003-03-04 00:00:00 |
| Expires | 2019-03-10 00:00:00 |
| Registrar | HINET |
| Date | IP Address |
| 2021-01-30 | 45.63.127.81 (ClassC) |
| 2026-02-06 | 54.238.84.219 (ClassC) |
| Date | Domain | IP |
| smtp1.jcase.com.tw | 2025-09-20 | 54.238.84.219 |
| mail2.jcase.com.tw | 2025-12-07 | 54.238.84.219 |
| beta.jcase.com.tw | 2025-06-27 | 54.238.84.219 |
| newweb.jcase.com.tw | 2026-02-06 | 54.238.84.219 |
| webmail.jcase.com.tw | 2025-12-02 | 54.238.84.219 |
| spam.jcase.com.tw | 2025-12-07 | 54.238.84.219 |
| pop.jcase.com.tw | 2025-05-27 | 54.238.84.219 |
| smtp.jcase.com.tw | 2025-12-07 | 54.238.84.219 |
| www.jcase.com.tw | 2025-09-22 | 52.195.142.146 |