Ask HN: Ist this a legitimate Facebook domain?

Hi people,

I just got a LinkedIn message from a Facebook recruiter in which I was told to register on this site: https://recruitingkickstarterspectech2020.splashthat.com/ . It seems kind of fishy since there is a similar site under a different domain. (https://facebookrecruitingkickstarterfee2020.splashthat.com/) Does somebody know how I could verify that this is a real thing? Sadly there is no contact on Facebooks career site.