xn--80aff3agn.xn--p1ai

Can xn--80aff3agn.xn--p1ai receive emails?

No, xn--80aff3agn.xn--p1ai cannot receive emails because it has neither an A record nor MX records.

Should you allow users to sign up to your website using the domain xn--80aff3agn.xn--p1ai?

No, xn--80aff3agn.xn--p1ai is a throwaway domain and should be blocked.

How to block the temporary domain xn--80aff3agn.xn--p1ai?

You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.

DNS Records

Source