I don't know who needs to hear this but entering your personal information into a website you've never heard of before in the hope that it might tell you your Social Security number is not a good idea.
@zackwhittaker What's wrong with putting in your name, birth year and state of residence? All of that information is already easily obtainable
@zackwhittaker can I use your personal information to test these sites instead?
@zackwhittaker when you’re not sure if you were affected, so just need to ensure it