The highest level of authentication you can get on a Wildcard SSL certificate is the Sectigo OV SSL Wildcard certificate. This certificate adds wildcard coverage to secure all your first-level subdomains without skimping on authentication. This is perfect for enterprise intranets, business websites, and connections behind your firewall. Save money, make certificate management easier and ensure you have organization authentication on EVERY connection you make, public or not. Best of all the Sectigo OV SSL Wildcard comes backed by a $1,000,000 warranty: this is one of our best values.