Securing Unified Communications got a bit easier with Comodo's Unified Communication Multiple Domain Wildcard certificate. This certificate is a perfect blend of all the benefits of a Unified Communication certificate and a Wildcard certificate. Designed for Microsoft Exchange and Office Communications infrastructures, this feature-rich UC wildcard certificate efficiently secures multiple domains and unlimited sub-domains under just one certificate! It is an Organization Validated (OV) certificate with 99.3% browser and mobile compatibility.