The fake domain sound very familiar I think from this same scammer: https://ninjastic.space/topic/5527899

You can see a scammer mentioned the domain on that link that has been deleted on this forum. I think I reported it in the past but I am unable to see the report.

This are the legit exch links:
https://exch.cx/
https://exch.pw/
https://hszyoqwrcp7cxlxnqmovp6vjvmnwj33g4wviuxqzq47emieaxjaperyd.onion/

Others are fake.

If you scroll down on the exchange, you can see all the legit links there.