Are you asking because you have a large number of hosts and can't check them all manually? (Edit: Because the obvious answer is to use your browser or a tool su

Are you asking because you have a large number of hosts and can't check them all manually? (Edit: Because the obvious answer is to use your browser or a tool such as SSL Labs or Hardenize to see who issued the certificate.) Out of curiosity, how many hosts are you looking after?