Depending on how your website is configured, you might want to use something other than a single-domain SSL certificate. Wildcard SSL certificates cover all of a domain name’s subdomains. For example, you can secure *.ironexample.com, which would cover shop.ironexample.com, www.ironexample.com and any other subdomains. UCC SSL certificates can cover multiple subdomains, unique domain names and websites. For example, you can secure www.ironexample.com, mail.ironexample.com and www.captainxample.com.