How many DC's in my domain

Maybe a silly question, but how do I find out how many Domain Controllers I have in my Domain?  I have several servers and need to know with confidence which are my DC and which are just servers.  We are currently running on a mixed 2008 and 2003 domain, functional domain level of 2003.  I should know this, but I don't.  Any help finding out would be greatly appreciated.
COHAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
I'd probably start with a look in the Domain Controllers OU.  You can also look at your DNS.  Assuming nothing is broken (run DCDIAG and NETDIAG for a good start at a health check) these should pretty much cover you.
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tigermattCommented:

I just wanted to throw this out here. It is possible a machine on the network was moved out of the Domain Controllers OU, but still holds the DC role.

A script is available at the Scripting Guy site (http://blogs.technet.com/heyscriptingguy/archive/2004/12/16/how-can-i-get-a-list-of-all-the-domain-controllers-in-my-domain.aspx) which scans the domain and finds all computers with an nTDSDSA object. This provides a definitive way to locate all the DCs in the domain, regardless of whether they are in the DCs OU or not.

However, I agree, Lee's solution to check the DCs container first would usually work. I tend to follow best practices by not relocating DCs out of that container.

-Matt
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Lee W, MVPTechnology and Business Process AdvisorCommented:
That's why I said assuming nothing is broken...  :-)
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