If you have a dedicated IP address, you can create a wildcard A record by setting the Host Name value to an * (asterisk).
When you do so, if the subdomain queried does not exist, the server will respond with the IP address specified in the Zone File Editor as the wildcard.
For example, if someone were to visit http://wildcard.mytestdomain.com, and the subdomain "wildcard" does not exist anywhere on the account, the visitor is redirected to the IP address you specified for the wildcard.
Log in to your My Products page.If you aren't automatically directed there, make sure to select the My Products tab.Next to the domain you want to use, click DNS.At the bottom of the Records section, click Add and select A from the drop-down list.Complete the following fields: - Host Name — Type *.
- Points to IP Address — Enter the IP address your domain name uses for this host record. For example, you can enter the same IP address you have for the @ record.
- TTL — Select how long the server should cache the information.
Click Save.Click Save Changes.Next step