That doesn't work. When I try to do that for my EE bond, it says "Valid 'Value as of' dates are 01/1996 through 05/2010".
How Do I Find How Much My EE Bonds Will Be Worth At Full Maturity?
The easiest way is to use the Treasury Departments Calculator
Calculator Link
Change the Value as of: Date to the Bonds maturity date.
Calculator Link
Change the Value as of: Date to the Bonds maturity date.