Expired phone numbers on the National Do Not Call registry?

I was cleaning up my computer files (something I try to do every once in a while, but almost never fully succeed at) and came across the saved notice from 8/4/2003 where I registered my home phone with the National Do Not Call registry. In the notice, it clearly says that my registration will expire in 8/5/2008, and it identifies my home phone number.

So I went to National Do Not Call registry site, and there is a blurb at the top of the page that says due to a 2007 law that went into effect in February 2008, registrations won't expire.

Your registration will not expire.
Telephone numbers placed on the National Do Not Call Registry will remain on it permanently due to the Do-Not-Call Improvement Act of 2007, which became law in February 2008. Read more about it at
http://www.ftc.gov/opa/2008/04/dncfyi.shtm.

So I thought to double-check and Verify my registration with the link on the left side. However, the verification confirmed that my phone number was actually not registered.

Is there some problem with the database? Or perhaps only phone numbers registered after the law went into effect will be permanent?