Domain validation (DV) SSL certificate
The most widespread kind of SSL certificate verifies a domain in an email or file process. An authorization email gets sent out automatically to the email contacts listed in the whois record to confirm the SSL certificate order. Otherwise a file delivered by mails has to be uploaded to the own webpage. The certification agency is only checking if the buyer is the proper domain owner. The certificate is issued within minutes after the order.
Clicking the lock icon in the browser shows the domain name.