"Pwned on 15 breached sites and found 1 paste" on my old e-mail address at https://haveibeenpwned.com. My current email address is harder to check, because besides using randomly generated passwords for each account, I have a unique mail address on the same domain for every account as well.
Next step: randomly generated email addresses? If I was a better programmer I might create a service for this myself.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!