| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 21stcentury.net | SOA | 21600 | master.dns.rcn.net hostmaster@rcn.com 2024070801 10800 3600 604800 86400 | |
| 21stcentury.net | NS | 21600 | auth4.dns.rcn.net | |
| 21stcentury.net | NS | 21600 | auth1.dns.rcn.net | |
| 21stcentury.net | NS | 21600 | auth2.dns.rcn.net | |
| 21stcentury.net | NS | 21600 | auth3.dns.rcn.net | |
| 21stcentury.net | A | 21600 | 216.80.19.60 | |
| 21stcentury.net | MX | 13537 | 10 | vm.mail.rcn.net |