xn--8ds86xnnjkvllw2bdbbvv680a.xn--j6w193g =

Is xn--8ds86xnnjkvllw2bdbbvv680a.xn--j6w193g a
temporary email domain?

Yes, xn--8ds86xnnjkvllw2bdbbvv680a.xn--j6w193g is a temporary/disposable email domain and should be blocked. This domain is typically used for short-term email access and does not represent legitimate long-term user accounts. We strongly recommend blocking registration attempts using this domain to prevent spam accounts.