How can I find out what nameservers have been assigned to my DNS?

I have a domain with Amazon but when I try to access it I get a message saying:

DNS Lookup for "www.abc.com" failed. System.Net.Sockets.SocketException The requested name is valid, but no data of the requested type was found

Is there a way that I can check what nameservers are assigned for that DNS?

Solution

I find http://mxtoolbox.com a useful website for this sort of thing.

Its meant for checking mX records, but after you do that there are DNS checks and other useful domain related lookups you can do.