Thread:Ripto22475/@comment-24669364-20160823230135/@comment--20160824000653

Typically CheckUsers requests are are reviewed by Staff through Special:Contact/general, but in order to have them actually "perform the check" you need to have a valid reason to run the CheckUser. Example... if you say "I suspect this user is an alt of someone who was previously banned named [insert banned user here]", then they should run the check. Otherwise, they will refuse to run the CheckUser if you just say "I'm curious if this user has any alts".

I looked myself, and I can say that they do have alternate accounts, but none of them are blocked or vandalized. So I personally wouldn't worry about them unless you have a policy that doesn't allow more than one editing account.