If you name something "vcenter01" i would expect that you are talking about the vCenter server which is the VCSA (linux based appliance) and is used as a central management solution of multible ESXi Hosts and for using als the cluster and adv. stuff.
Yes, "https://vcenter01.rob.com" should be the startpage. But you can compare to the following screenshot and in the lower right you will see the download link.
Regards,
Joerg