Wildcard subdomains can be usefull when your domain utilizes a lot of different subdomains, for instance user-generated subdomains.
You may set-up a wildcard subdomain direct with a source like: *.example.com
Note: wildcard subdomains are available from the Pro plan and up.
Note: a wildcard source will be counted as using 10 source hostnames due to the high amount of SSL certificate options. Many different subdomains under a wildcard (100+) are subject to our fair-use policy.
Note: we use a per-subdomain SSL certificates. Certificates are automatically installed on a first-request basis.