I've seen a count of each instance and how many they are blocking, as well as how many they are blocked by. For instance, Beehaw blocks a ton of instances (visible from that link), but I can no longer find a way to see which instances block content that comes from Beehaw.
Is there a way to see that list? Or is the first one good enough for all intents and purposes?
Enter a Domain: This one is to search how many other instances blocked the one you're searching.
Reverse search: This one is to search for how many instances the one you searched has blocked. I see Beehaw.org has 391 blocked and lemmy.world has 50 blocked.
Thanks to your picture I found the problem, my phone auto makes the first letter big and that makes it not work. Some instances though have blocked Lemmy.ml with a big L so that one shows some instances, so that also throw me off a bit, as it seemingly worked for that one.