An OV (Organization Validation) SSL certificate involves verifying the company holding the domain, whose information the certificate contains, as well as the domain holder. The three types of certificates allow a company or organization to be associated with a single domain, up to 5 domains (SAN) or one domain and unlimited subdomains (Wildcard).
Checks on the domain: We check to make sure that whoever is requesting the certificate controls the server that responds to the domain in question.
Checks on the organization: We check to make sure that the organization exists and that whoever is requesting the certificate is part of the organization.