PSA on the Equifax breach:
You can enter most anything into their "check if I've been breached" thing and it will say you've been breached.
The whole site they set up is just a scam to force people into signing up for their "identity protection service." You get a year free but you better believe they'll start charging you for it after that, and the opt-out process is never easy.
Don't buy into it. Just keep an eye on your credit report and credit/bank account statements.
@ThatDamnCat They claim the site was broken earlier today and that folks got inaccurate results, too: https://krebsonsecurity.com/2017/09/equifax-breach-response-turns-dumpster-fire/
If you've ever used any online service Equifax provides, I'd just assume you were breached if I were you.