Securing one domain and all your subdomains is easy with the Sectigo InstantSSL Premium Wildcard certificate. This certificate will protect www.yourdomain.com and all associated subdomains, such as mail.yourdomain.com, abc.yourdomain.com, etc. Additionally, since this is an Organization Validated (OV) certificate, it provides HTTPS and a static Sectigo Site Seal. This wildcard certificate is an excellent option for medium-sized companies and e-commerce sites that require secure encryption for private communications and transactions.