| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 1st-s.co.jp | SOA | 21600 | kotetsu.alpha-lt.net postmaster@alpha-web.ne.jp 2023072300 10800 3600 604800 86400 | |
| 1st-s.co.jp | NS | 21600 | kotetsu.alpha-lt.net | |
| 1st-s.co.jp | NS | 21600 | amdns03.alpha-mail.jp | |
| 1st-s.co.jp | NS | 21600 | tsukuba.aics.ne.jp | |
| 1st-s.co.jp | A | 21600 | 150.60.158.197 | |
| 1st-s.co.jp | MX | 21600 | 50 | ampub04.alpha-mail.net |
| 1st-s.co.jp | MX | 21600 | 10 | ampub02.alpha-mail.net |
| 1st-s.co.jp | MX | 21600 | 10 | ampub03.alpha-mail.net |
| 1st-s.co.jp | MX | 21600 | 10 | ampub01.alpha-mail.net |
| www.1st-s.co.jp | A | 21600 | 150.60.158.197 |