A Multi-Domain Certificate (MDC) is an SSL certificate that supports the protection of several different domains with a single certificate.
For example, with one multi-domain certificate you can protect:
• billur.com
• example.me
• primer.rf
• domain.ua
Such certificates are also called: SSL SAN (Subject Alternative Name) or SSL UCC (Unified Communications Certificate).
The main difference between this type of certificate is that SAN certificates allow you to protect one main and several additional domains at the same time.