Notes: There are no limitations on how many sub-domains can be created and secured by a single Wildcard SSL Certificate. Make sure you create a CSR with a common name of *.yourdomain.com.
Notes: Only Public IP Addresses may be used. You must be the owner of the IP Address as per records held at RIPE. Make sure you create a CSR with a common name of your IP address, e.g 123.456.78.90.