Yes, betr.co can receive emails.
No, betr.co 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
mx.zoho.com.cn
163.53.93.168
mx2.zoho.com.cn
163.53.93.170