Yes, iht.or.id can receive emails.
No, iht.or.id 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
202.159.121.251
MX records
mx1.diantara.net
202.159.121.241
mx2.diantara.net
202.159.35.241
virgo.diantara.net
202.159.121.227