ADO LDAP Ranging Dialect
When using ActiveX Directory Objects (ADO) with the LDAP dialect, the attribute and range specifier do not require quotation marks.
The following is an example of the ADO LDAP dialect.
Command.Text = "<LDAP://CN=NewGroup,DC=Fabrikam,DC=Com>;(objectCategory=group);name,member;Range=51-*;base"