Pricing API Docs Integrations

4-n.us

is a disposable email

Can 4-n.us receive emails?

No, 4-n.us 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 4-n.us?

No, 4-n.us is a throwaway domain and should be blocked.

How to block the disposable domain 4-n.us?

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

DNS Records

A record

None

MX records

None

Domain Directory