Wildcard SSL certificates secures your website URL and an unlimited number of its subdomains. For example, a single Wildcard certificate can secure www.coolexample.com, blog.coolexample.com, and store.coolexample.com.

NOTE: Wildcard certificates secure the common name and all subdomains at the level you specify when you submit your request. Just add an asterisk (*) in the subdomain area to the left of the common name.

Examples:

If you request your certificate for *.coolexample.com, you can secure:

coolexample.com

www.coolexample.com

photos.coolexample.com

blog.coolexample.com

If you request your certificate for *.www.coolexample.com, you can secure:

www.coolexample.com

mail.www.coolexample.com

photos.www.coolexample.com

blog.www.coolexample.com

Wildcard certificates secure websites just like regular OV SSL certificates, and requests are processed using the same validation methods. However, some Web servers might require a unique IP address for each subdomain on the Wildcard certificate.

NOTE: TSO Wildcard certificates are available only as an Organization validation type.

Next steps:

Purchase a Wildcard SSL certificate