Hey folks!

I'm applying for a new passport! I'm so excited. Anyway, I divorced several years ago. It asks me the question about if I've ever been married / divorced. Of course, it asks my ex wife's name. I have NO CLUE whether or not she reverted back to her maiden name, kept my last name or if she remarried. We are not on speaking terms nor do I wish to be (legally, she's been warned about harassing me). So, do I put my last name down (she did take it) or what her maiden name is? Both?

Thanks a bunch!