Wildcard SSL Support Centre

Once you own a domain (such as domain.com), you have the ability of adding many subdomains at no costs to you, potentially giving you hundreds of sites without purchasing seperate domain names. Obviously, it may not be cost effective to buy an SSL certificate for each site, so why not protect those sites with a single Wildcard SSL?

With a Wildcard SSL you can secure an unlimited amount of subdomains under the same domain name. The Wildcard SSL certificate issued to a domain (such as *.domain.com) but then allows you to protect any number of subdomains.

This SSL could then cover:

www.domain.com
mail.domain.com
secure.domain.com
anything.domain.com

The posibilities are endless, and you would only need one SSL!

A subdomain is the part of the website address before the domain name. For example, the address for the domain.com forum may be http://forum.domain.com. Here, forum.domain.com is a subdomain of domain.com.

Subdomains are also known as the third level domains or canonical names and can be created by the web host on the DNS server. The most commonly used subdomain is www, as in http://www.domain.com. Similarly, mail server addresses often have mail as the subdomain, as in mail.domain.com.

With a wildcard SSL you can secure all these subdomains by simply securing *.domain.com.

To purchase this type of SSL you would need to create a CSR and within the common name place an asterisk (*) where you want the difference to the certificate to occur. So when creating the CSR the common name could be *.domain.com and this would cover anything.domain.com.