Yes, firekiwi.xyz can receive emails.
No, firekiwi.xyz is a throwaway domain and should be blocked.
You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.
A record
None
MX records
mxa.mailgun.org
52.206.88.33
mxb.mailgun.org
52.38.95.68