Some websites or server configurations require a specific type of SSL. Prior to purchasing your SSL certificate there are several factors you need to consider, including how you use your website, how many domains you want to secure, where you are located and if you can install the SSL certificate yourself.
How do you want to show visitors that your site is secure? Do you want visitors to see the SSL belongs to a verified organization, or is HTTPS in the address enough?
All SSL-secured sites display HTTPS in the address. Premium Extended Validation (EV) SSLs also display a prominent indicator — usually a green address bar — to quickly assure visitors that the organization's legal and physical existence was verified according to strict industry standards. For more information, see What is a Premium Extended Validation (EV) SSL certificate?
Do all of the sites have fully qualified domain names, or do you need to add a few subdomains (see What is a subdomain?) on the fly?
EV UCC SSLs represent all secondary domains with the primary business name, so all sites should be related. A UCC site seal displays only the primary domain name as "Issued To," and all secondary websites are listed in the certificate details.
Our SSL certificates are issued to individuals and companies worldwide, but there are a few restrictions. For more information, see Which countries are currently supported for certificate issuance?
Our SSL certificates work on all types of hosting and server configurations, but these specific servers must use the certificate listed:
All domains are listed in a UCC. If you want to secure both fully qualified (example: www.coolexample.com) and partially qualified (example: coolexample.com) domains with a UCC, make sure to select a domain for each one. Know which domains you need to cover when you purchase, because you cannot upgrade.
Purchase a SSL certificate.