Here is a quick command how to find a Certificate Authority in Active Directory. This is helpful if you have many domain controllers and are not sure where the Certificate Services role is installed on.
Windows Server 2008 R2 / 2012 R2
Here is what shows up if you have NOT configured a “Certificate Authority” in your domain
Windows Server 2012 R2
Here is another way to find out but this command only works on 2012