These certificates protect both subdomains and root domains.
Wildcard SSL means a certificate that ensures protection of the root domain (domain.ru) and all of its subdomains (*.domain.ru).
RU-CENTER offers wildcard certificates issued by the following certificate authorities: Thawte, GeoTrust, and Comodo. Legal entities can obtain wildcard certificates featuring domain and company validation. The cheapest solution for our customers is RU-CENTER's own branded wildcard certificates — RU-CENTER SSL Platinum Wildcard.
GeoTrust Rapid SSL Wildcard certificates are available to individuals and individual entrepreneurs. With the cost starting from RUB 10,700 per year, these certificates have a simplified validation procedure and validate only domains.
You can buy wildcard SSL certificates for a year or two, thus saving 10-15%.