Just run Active Directory Users and Computers console locally. Click right mouse button on domain name and choose find.
From combobox select "Custom search" and click on "Advanced" tab
Paste this code there and click "Find now"
(objectCategory=Computer)(objectClass=Computer)(operatingSystem=*Server*)
it will display all server in domain. You can change each domain in "Find ... in ..)
to get all DCs in domain(s) you have to logon to particular member server with ADS installed and type in cmd command
dsquery server -o rdn
