| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 21stc.co.uk | SOA | 21600 | ns1.hostingsystems.co.uk hostmaster@hostingsystems.co.uk 2025013001 3600 1800 1209600 3600 | |
| 21stc.co.uk | NS | 21600 | ns0.hostingsystems.co.uk | |
| 21stc.co.uk | NS | 21600 | ns2.hostingsystems.co.uk | |
| 21stc.co.uk | NS | 21600 | ns1.hostingsystems.co.uk | |
| 21stc.co.uk | A | 21600 | 92.205.185.49 | |
| 21stc.co.uk | MX | 4421 | 10 | 21stc-co-uk.mail.protection.outlook.com |
| www.21stc.co.uk | A | 21600 | 92.205.185.49 |