This is a very popular wildcard certificate, as it offers full 256-bit encryption for one main domain and an unlimited amount of associated subdomains. Plus, being a Domain Validated (DV) certificate, it can be issued in a matter of minutes.
RapidSSL® is a leading provider of fast and easy SSL certificates. This low-cost certificate offers standard 128/256-bit encryption and is one of the most popular Domain Validated (DV) wildcard SSL certificates in the world. It’s known for lightning fast issuance and an unbeatable price. Also, 99+% of all browsers recognize this certificate. The RapidSSL wildcard certificate is an ideal solution for entry-level websites that need to protect one main domain (both www and non-www) along with their subdomains (i.e. exampledomain.com, mail.exampledomain.com, admin.exampledomain.com, retail.exampledomain.com, etc.)