Multi-Domain (UC/SAN) SSL Certificates

Secure multiple host names with one single SSL certificate
With a multi-domain SSL certificate (also known as UC/SAN certificate) you get a versatile, cost-effective solution to secure multiple domain names with a single certificate. They fit perfectly for shared hosting or QA testing environments, as well as small and medium sized businesses that need to secure multiple business applications on a single server.
You might secure ssl.example.com, shop.example.com, shop2.example-domain.com, shop.example.us and www.example.net – only one SSL certificate is needed to protect all these fully qualified domain names. If your demands are growing simply add more SANs (Subject Alternative Names) to your certificate and all of them are protected with industry leading, strong SSL encryption.
Please note that Multi-Domain SSL certificates must not contain an internal host name (e.g. server.local etc.) – Read more…

The Certificate Authority checks if you are the rightful owner of the domain and also validates the business entity (organization validation and extended validation) before issuing a certificate.

Site Seals are SSL logos provided for free by the the Certificate Authority. You can place Site Seals anywhere on your website to show visitors your site is secured.

The level of security depends on the number of bits used to generate encryption key. All wildcard SSL certificates support up to 256-bit encryption.