Yes, pewpewpewpew.pw can receive emails.
No, pewpewpewpew.pw 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
167.114.101.158
MX record
smtp.pewpewpewpew.pw
167.114.101.158