Hostnames are created when you want to host your own nameserver on your domain. Hostnames are always mapped to an IP address. To add hostnames for your domain:

1. Go to the My Domains tab in your Zoho Domains account, where all your domains will be listed.
2. Click Manage next to the domain you wish to change DNS records. You will be taken to the domain management page.
3. Click Manage DNS on the domain management page.
4. Navigate to the Hostnames tab.
5. Click the Add hostname button.

6. Enter the hostname. This is usually a subdomain name.
7. Enter the IP Address that the above hostname is mapped to.
8. You can add another hostname by clicking Add Hostname.
9. Save the changes by clicking Save.