If I ignored/blocked an anonymous tumblr user, would they appear on my ignored users list?

[Meow]

Would it show them as anonymous or would it display their url address or would they even appear at all?? Also, if they don't appear then how would you have the option to remove them from ignore in the future?
@xoxo-gossip-girl

but the ignore option is available under anonymous messages, so i would assume it's possible otherwise it wouldn't be there? :/

[xoxo-gossip-girl]

i'm pretty sure you can't actually block an anonymous tumblr user, because technically they're "anonymous" and you can't just block someone unknown. i've tried.