| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 4is.net | SOA | 21600 | system4.FOUR.net postmaster@FOUR.net 201203082 10800 900 604800 86400 | |
| 4is.net | NS | 21600 | SYSTEM4.FOUR.net | |
| 4is.net | NS | 21600 | INDIGO.FOUR.COM | |
| 4is.net | NS | 21600 | NOC.FOUR.net | |
| 4is.net | MX | 21600 | 10 | osprey.four.com |