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How do I know if a server is a domain controller?

I have just been moved into an area where I am totally out of my depth. Just trying to dip my toe into the network arena.

I have two "servers." One is MS Server 2000 and the other MS Server 2003. How can I know if either is a domain controller? How can I find the domain name?

3 Solutions
Hi BobGipson,

open up active directory and check under the domain controllers OU

you can find the domain name by right clicking my computer and selecting properties - network ID TAB
Lee W, MVPTechnology and Business Process AdvisorCommented:
Easiest way to tell - at logon (when you press Control+Alt+Del) make sure the "options" are displayed so you see a "Logon To:" section.

Clilck it so you see the list of items you can logon to - if there is NO entry with "(this computer)" in it, then it's a domain controller (you cannot log on locally to a domain controller.  Further, the domain name is the (other) name listed in that drop down box.
Rob WilliamsCommented:
Is it a domain? If a workgroup, no active directory, so you could right click on my computer choose properties and then computer name. It will show workgroup and workgroup name if not a domain, or domain and domain name if a domain. If a domain follow Jay_Jay70's lead.
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Assuming you don't have administrative privileges on the servers, you could try opening a commandprompt and typing:

nbtstat -a <servername>

If you see any entries in the list with <1B> or <1C> in the second column, you know that it's a domain controller.
The column in front of that shows you the domain.
Granted, it's a bit of an old-fashioned method, but it still works like a charm :)

Another way to discover what DC you're using is opening a command prompt and typing:

echo %logonserver%

If you are an administrator, you've got loads of options like the ones mentioned in the other answers
it depends on the conditions if u r a user then if u wanna find out ur domain name just chk before logging on that on which domain ur logging on n c which machine has shared a folder named sysvol & netlogon on the network
on the other hand if ur administrator than in active directory users and computer pane u can find out that if ur machine is domain controller or not u can also chk my computer properties n thn computername computer with management console of active directory user and computer has a good chance of being domain controller so all in all there r many ways of finding it out.

BobGipsonAuthor Commented:
Thanks, everyone. That clears up a lot!
Rob WilliamsCommented:
Thanks  BobGipson,

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