if you click the domain from the left side of the control panel or clickj the domains otion on the main panel within the quick access page it gives a list of domains.
click the one you want to check and it will show you what server you are on.
ie win1,2,,3 - 9 and wincf is the cold fusion server.
also there is mssql1 -4 and mySQL1,2
and a few others
as you posted within the reseller forum.
if you login to the administration account. and then click e:maginer then server aliases, you will se a list of all servers/ host names