| Property | Value |
| Organization | East Japan Railway Company |
| NameServer | a10-66.akam.net |
| Created | 1995-08-28 00:00:00 |
| Changed | 2015-08-31 16:09:20 |
| Date | IP Address |
| 2020-06-03 | 23.48.209.74 (ClassC) |
| 2025-12-30 | 23.46.17.158 (ClassC) |
| 2026-01-02 | 23.41.4.75 (ClassC) |
| 2026-02-08 | 23.41.4.77 (ClassC) |
| Date | Domain | IP |
| media.jreast.co.jp | 2026-01-10 | 3.169.173.90 |
| mall.jreast.co.jp | 2026-02-04 | 3.169.173.87 |
| traininfo.jreast.co.jp | 2014-11-18 | 198.47.108.91 |
| testtraininfo.jreast.co.jp | 2025-12-30 | 23.46.17.158 |
| furusato.jreast.co.jp | 2025-08-28 | 3.175.34.117 |
| rtoaster.jreast.co.jp | 2022-04-29 | 104.102.249.154 |
| event.jreast.co.jp | 2025-08-18 | 3.175.34.48 |
| www.jreast.co.jp | 2024-08-15 | 104.96.163.148 |