Can you help me with some thing related to dsquery

I am trying to search domain and sub-domain using the below command but not getting the result

dsquery computer -d edf.com -scope subtree -name

But not getting the output

the sub domains are

america.edf.com

europe.edf.com

edfcorp.edf.com

My local domain is edfcorp.edf.com from where i am searching

please tell me where i am wrong

try this: dsquery server /forest