With a Wildcard-SSL-Certificate you can include unlimited subdomains in a single domain and make them secure. That means with a single click all your subdomains *.mydomain.com are secured. Through that you can avoid alot of work and costs when you are using many subdomains, compared to a single domain certificate.
Your browser does not support modern features that our website and the easyname Control Panel rely on. Using old browser versions also poses a security threat to you and your computer. Please upgrade to a modern version of your browser.