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I know this isn't helpful, but if it was a Hyper-V VM, the guest would have a registry key that holds the Host name. I don't believe that vSphere/ESX has that level of integration and the guests have no idea where they are.

yes you can! here are my esx hosts.

middle column (in details view) in director as well

Since the OP posted on General, not sure if he's asking about Citrix VMs or not.

You can’t by default, the VMs have no idea. If someone had the foresight to set the value, you can try vmtoolsd.exe --cmd “info-get guestinfo.hypervisor.hostname”

I asked for check from inside of VM - completely without access to VMware ESX / vCenter 😉

vmtools lives inside the VM…

It's the one thing that Hyper-V does better than vSphere.

You also didn’t specify from inside the VM, which is why everyone was saying look at director or studio because they already have connections to vcenter that will give you the info even if you can’t login yourself.

OK my bad I wasn’t clear enough 🤷🏻‍♂️