Is there a list of games that are no longer ESA protected?

I do a little SNES and NES emulation on my computer, and I understand that some games are no longer ESA protected. I take this as meaning they are now Freeware. I don’t like breaking copyright laws. Call me crazy, but I like supporting those who have worked to give me this product.

The problem is, I can’t seem to find a list of ESA protected things, or an easy way to tell if it’s protected. I’ve found a few lists of games that are in fact protected, but these lists are a few years outdated.

Much lurve to anyone who can find a list!