LDAP ColdFusion Scope Question

[Signit]

I am attempting to get all of the OUs at the base level of our active directory. I can run this same query in an LDAP Query tool (LDP) and get back an expected low number of results. When I run this query in ColdFusion I return no OUs. However, if I run this same query with a scope of subtree I return every OU in our directory. Any thoughts on what is causing this to occur?

<cfldap
    server="network.mycompany.com"
	port="389"
	username="userName"
	password="password"
    action="query"
	name="results2"
	attributes="canonicalName,OU,DN,name,objectClass,description"
    start="DC=network,DC=mycompany,DC=com"
	filter="(OU=*)"
	scope="base"
	sortcontrol="asc">